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Finding the Fourth Proportional to 15,562.78, 21,473.41 and 9,101.17

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Solution

The fourth proportional to 15,562.78, 21,473.41 and 9,101.17 is: 12,557.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,562.78 : 21,473.41 = 9,101.17 : x
  2. Step 2: Convert to fraction form
    15,562.78/21,473.41 = 9,101.17/x
  3. Step 3: Cross multiply
    15,562.78x = 21,473.41 × 9,101.17
  4. Step 4: Simplify right side
    15,562.78x = 195,433,154.89
  5. Step 5: Solve for x
    x = 195,433,154.89/15,562.78
  6. Step 6: Final answer
    x = 12,557.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.