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Finding the Fourth Proportional to 10,981.10, 16,471.65 and 10,908.20

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Solution

The fourth proportional to 10,981.10, 16,471.65 and 10,908.20 is: 16,362.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.10 : 16,471.65 = 10,908.20 : x
  2. Step 2: Convert to fraction form
    10,981.10/16,471.65 = 10,908.20/x
  3. Step 3: Cross multiply
    10,981.10x = 16,471.65 × 10,908.20
  4. Step 4: Simplify right side
    10,981.10x = 179,676,052.53
  5. Step 5: Solve for x
    x = 179,676,052.53/10,981.10
  6. Step 6: Final answer
    x = 16,362.30

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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.