Home / 18,721,781.52-28,032,209.88-12,228,778.08

Finding the Fourth Proportional to 18,721,781.52, 28,032,209.88 and 12,228,778.08

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Solution

The fourth proportional to 18,721,781.52, 28,032,209.88 and 12,228,778.08 is: 18,310,205.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,781.52 : 28,032,209.88 = 12,228,778.08 : x
  2. Step 2: Convert to fraction form
    18,721,781.52/28,032,209.88 = 12,228,778.08/x
  3. Step 3: Cross multiply
    18,721,781.52x = 28,032,209.88 × 12,228,778.08
  4. Step 4: Simplify right side
    18,721,781.52x = 342,799,673,714,503.44
  5. Step 5: Solve for x
    x = 342,799,673,714,503.44/18,721,781.52
  6. Step 6: Final answer
    x = 18,310,205.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.