Home / 20,981,306.94-28,955,097.15-11,688,871.74

Finding the Fourth Proportional to 20,981,306.94, 28,955,097.15 and 11,688,871.74

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Solution

The fourth proportional to 20,981,306.94, 28,955,097.15 and 11,688,871.74 is: 16,131,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981,306.94 : 28,955,097.15 = 11,688,871.74 : x
  2. Step 2: Convert to fraction form
    20,981,306.94/28,955,097.15 = 11,688,871.74/x
  3. Step 3: Cross multiply
    20,981,306.94x = 28,955,097.15 × 11,688,871.74
  4. Step 4: Simplify right side
    20,981,306.94x = 338,452,416,805,589.50
  5. Step 5: Solve for x
    x = 338,452,416,805,589.50/20,981,306.94
  6. Step 6: Final answer
    x = 16,131,140.82

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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.