Home / 20,711,427.68-28,581,959.76-11,419,331.24

Finding the Fourth Proportional to 20,711,427.68, 28,581,959.76 and 11,419,331.24

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Solution

The fourth proportional to 20,711,427.68, 28,581,959.76 and 11,419,331.24 is: 15,758,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711,427.68 : 28,581,959.76 = 11,419,331.24 : x
  2. Step 2: Convert to fraction form
    20,711,427.68/28,581,959.76 = 11,419,331.24/x
  3. Step 3: Cross multiply
    20,711,427.68x = 28,581,959.76 × 11,419,331.24
  4. Step 4: Simplify right side
    20,711,427.68x = 326,386,865,987,790.94
  5. Step 5: Solve for x
    x = 326,386,865,987,790.94/20,711,427.68
  6. Step 6: Final answer
    x = 15,758,781.63

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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.