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Finding the Fourth Proportional to 15,691.88, 23,517.81 and 7,353.51

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Solution

The fourth proportional to 15,691.88, 23,517.81 and 7,353.51 is: 11,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.88 : 23,517.81 = 7,353.51 : x
  2. Step 2: Convert to fraction form
    15,691.88/23,517.81 = 7,353.51/x
  3. Step 3: Cross multiply
    15,691.88x = 23,517.81 × 7,353.51
  4. Step 4: Simplify right side
    15,691.88x = 172,938,362.82
  5. Step 5: Solve for x
    x = 172,938,362.82/15,691.88
  6. Step 6: Final answer
    x = 11,020.88

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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.