Home / 20,401,389-28,153,916.82-11,234,009.88

Finding the Fourth Proportional to 20,401,389, 28,153,916.82 and 11,234,009.88

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Solution

The fourth proportional to 20,401,389, 28,153,916.82 and 11,234,009.88 is: 15,502,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401,389 : 28,153,916.82 = 11,234,009.88 : x
  2. Step 2: Convert to fraction form
    20,401,389/28,153,916.82 = 11,234,009.88/x
  3. Step 3: Cross multiply
    20,401,389x = 28,153,916.82 × 11,234,009.88
  4. Step 4: Simplify right side
    20,401,389x = 316,281,379,716,578.19
  5. Step 5: Solve for x
    x = 316,281,379,716,578.19/20,401,389
  6. Step 6: Final answer
    x = 15,502,933.63

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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.