Home / 20,681,508.59-28,539,561.20-11,854,631.85

Finding the Fourth Proportional to 20,681,508.59, 28,539,561.20 and 11,854,631.85

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Solution

The fourth proportional to 20,681,508.59, 28,539,561.20 and 11,854,631.85 is: 16,358,864.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,508.59 : 28,539,561.20 = 11,854,631.85 : x
  2. Step 2: Convert to fraction form
    20,681,508.59/28,539,561.20 = 11,854,631.85/x
  3. Step 3: Cross multiply
    20,681,508.59x = 28,539,561.20 × 11,854,631.85
  4. Step 4: Simplify right side
    20,681,508.59x = 338,325,991,186,544.19
  5. Step 5: Solve for x
    x = 338,325,991,186,544.19/20,681,508.59
  6. Step 6: Final answer
    x = 16,358,864.23

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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.