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Finding the Fourth Proportional to 15,560.49, 21,472.62 and 8,845.17

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Solution

The fourth proportional to 15,560.49, 21,472.62 and 8,845.17 is: 12,205.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,560.49 : 21,472.62 = 8,845.17 : x
  2. Step 2: Convert to fraction form
    15,560.49/21,472.62 = 8,845.17/x
  3. Step 3: Cross multiply
    15,560.49x = 21,472.62 × 8,845.17
  4. Step 4: Simplify right side
    15,560.49x = 189,928,974.25
  5. Step 5: Solve for x
    x = 189,928,974.25/15,560.49
  6. Step 6: Final answer
    x = 12,205.85

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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.