Home / 15,685.52-23,531.88-5,156.43

Finding the Fourth Proportional to 15,685.52, 23,531.88 and 5,156.43

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Solution

The fourth proportional to 15,685.52, 23,531.88 and 5,156.43 is: 7,735.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685.52 : 23,531.88 = 5,156.43 : x
  2. Step 2: Convert to fraction form
    15,685.52/23,531.88 = 5,156.43/x
  3. Step 3: Cross multiply
    15,685.52x = 23,531.88 × 5,156.43
  4. Step 4: Simplify right side
    15,685.52x = 121,340,423.08
  5. Step 5: Solve for x
    x = 121,340,423.08/15,685.52
  6. Step 6: Final answer
    x = 7,735.83

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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.