Home / 16,981.40-25,471.56-8,217.20

Finding the Fourth Proportional to 16,981.40, 25,471.56 and 8,217.20

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Solution

The fourth proportional to 16,981.40, 25,471.56 and 8,217.20 is: 12,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.40 : 25,471.56 = 8,217.20 : x
  2. Step 2: Convert to fraction form
    16,981.40/25,471.56 = 8,217.20/x
  3. Step 3: Cross multiply
    16,981.40x = 25,471.56 × 8,217.20
  4. Step 4: Simplify right side
    16,981.40x = 209,304,902.83
  5. Step 5: Solve for x
    x = 209,304,902.83/16,981.40
  6. Step 6: Final answer
    x = 12,325.54

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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.