Home / 27,135.90-40,691.70-12,337.20

Finding the Fourth Proportional to 27,135.90, 40,691.70 and 12,337.20

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Solution

The fourth proportional to 27,135.90, 40,691.70 and 12,337.20 is: 18,500.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,135.90 : 40,691.70 = 12,337.20 : x
  2. Step 2: Convert to fraction form
    27,135.90/40,691.70 = 12,337.20/x
  3. Step 3: Cross multiply
    27,135.90x = 40,691.70 × 12,337.20
  4. Step 4: Simplify right side
    27,135.90x = 502,021,641.24
  5. Step 5: Solve for x
    x = 502,021,641.24/27,135.90
  6. Step 6: Final answer
    x = 18,500.28

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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.