Home / 20,782,152.60-28,678,523.28-11,489,131.20

Finding the Fourth Proportional to 20,782,152.60, 28,678,523.28 and 11,489,131.20

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Solution

The fourth proportional to 20,782,152.60, 28,678,523.28 and 11,489,131.20 is: 15,854,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782,152.60 : 28,678,523.28 = 11,489,131.20 : x
  2. Step 2: Convert to fraction form
    20,782,152.60/28,678,523.28 = 11,489,131.20/x
  3. Step 3: Cross multiply
    20,782,152.60x = 28,678,523.28 × 11,489,131.20
  4. Step 4: Simplify right side
    20,782,152.60x = 329,491,316,586,174.31
  5. Step 5: Solve for x
    x = 329,491,316,586,174.31/20,782,152.60
  6. Step 6: Final answer
    x = 15,854,532.63

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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.