Home / 20,781,375.96-28,677,066.30-11,488,391.85

Finding the Fourth Proportional to 20,781,375.96, 28,677,066.30 and 11,488,391.85

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Solution

The fourth proportional to 20,781,375.96, 28,677,066.30 and 11,488,391.85 is: 15,853,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,375.96 : 28,677,066.30 = 11,488,391.85 : x
  2. Step 2: Convert to fraction form
    20,781,375.96/28,677,066.30 = 11,488,391.85/x
  3. Step 3: Cross multiply
    20,781,375.96x = 28,677,066.30 × 11,488,391.85
  4. Step 4: Simplify right side
    20,781,375.96x = 329,453,374,762,829.62
  5. Step 5: Solve for x
    x = 329,453,374,762,829.62/20,781,375.96
  6. Step 6: Final answer
    x = 15,853,299.39

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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.