Home / 15,691.85-23,540.21-5,159.49

Finding the Fourth Proportional to 15,691.85, 23,540.21 and 5,159.49

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Solution

The fourth proportional to 15,691.85, 23,540.21 and 5,159.49 is: 7,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.85 : 23,540.21 = 5,159.49 : x
  2. Step 2: Convert to fraction form
    15,691.85/23,540.21 = 5,159.49/x
  3. Step 3: Cross multiply
    15,691.85x = 23,540.21 × 5,159.49
  4. Step 4: Simplify right side
    15,691.85x = 121,455,478.09
  5. Step 5: Solve for x
    x = 121,455,478.09/15,691.85
  6. Step 6: Final answer
    x = 7,740.04

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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.