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Finding the Fourth Proportional to 10,474.80, 15,616.20 and 9,551.40

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Solution

The fourth proportional to 10,474.80, 15,616.20 and 9,551.40 is: 14,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,474.80 : 15,616.20 = 9,551.40 : x
  2. Step 2: Convert to fraction form
    10,474.80/15,616.20 = 9,551.40/x
  3. Step 3: Cross multiply
    10,474.80x = 15,616.20 × 9,551.40
  4. Step 4: Simplify right side
    10,474.80x = 149,156,572.68
  5. Step 5: Solve for x
    x = 149,156,572.68/10,474.80
  6. Step 6: Final answer
    x = 14,239.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.