Home / 20,391,188,064.72-28,136,103,983.73-11,358,721,390.77

Finding the Fourth Proportional to 20,391,188,064.72, 28,136,103,983.73 and 11,358,721,390.77

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Solution

The fourth proportional to 20,391,188,064.72, 28,136,103,983.73 and 11,358,721,390.77 is: 15,672,954,668.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,188,064.72 : 28,136,103,983.73 = 11,358,721,390.77 : x
  2. Step 2: Convert to fraction form
    20,391,188,064.72/28,136,103,983.73 = 11,358,721,390.77/x
  3. Step 3: Cross multiply
    20,391,188,064.72x = 28,136,103,983.73 × 11,358,721,390.77
  4. Step 4: Simplify right side
    20,391,188,064.72x = 319,590,166,172,923,002,880
  5. Step 5: Solve for x
    x = 319,590,166,172,923,002,880/20,391,188,064.72
  6. Step 6: Final answer
    x = 15,672,954,668.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.