Home / 12,488,432.20-18,746,645.10-9,661,078.60

Finding the Fourth Proportional to 12,488,432.20, 18,746,645.10 and 9,661,078.60

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Solution

The fourth proportional to 12,488,432.20, 18,746,645.10 and 9,661,078.60 is: 14,502,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488,432.20 : 18,746,645.10 = 9,661,078.60 : x
  2. Step 2: Convert to fraction form
    12,488,432.20/18,746,645.10 = 9,661,078.60/x
  3. Step 3: Cross multiply
    12,488,432.20x = 18,746,645.10 × 9,661,078.60
  4. Step 4: Simplify right side
    12,488,432.20x = 181,112,811,797,404.88
  5. Step 5: Solve for x
    x = 181,112,811,797,404.88/12,488,432.20
  6. Step 6: Final answer
    x = 14,502,445.86

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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.