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Finding the Fourth Proportional to 15,687.47, 23,510.42 and 7,352.57

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Solution

The fourth proportional to 15,687.47, 23,510.42 and 7,352.57 is: 11,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687.47 : 23,510.42 = 7,352.57 : x
  2. Step 2: Convert to fraction form
    15,687.47/23,510.42 = 7,352.57/x
  3. Step 3: Cross multiply
    15,687.47x = 23,510.42 × 7,352.57
  4. Step 4: Simplify right side
    15,687.47x = 172,862,008.78
  5. Step 5: Solve for x
    x = 172,862,008.78/15,687.47
  6. Step 6: Final answer
    x = 11,019.11

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1.5x scale

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.