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Finding the Fourth Proportional to 21,685.66, 32,503.39 and 9,974.30

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Solution

The fourth proportional to 21,685.66, 32,503.39 and 9,974.30 is: 14,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.66 : 32,503.39 = 9,974.30 : x
  2. Step 2: Convert to fraction form
    21,685.66/32,503.39 = 9,974.30/x
  3. Step 3: Cross multiply
    21,685.66x = 32,503.39 × 9,974.30
  4. Step 4: Simplify right side
    21,685.66x = 324,198,562.88
  5. Step 5: Solve for x
    x = 324,198,562.88/21,685.66
  6. Step 6: Final answer
    x = 14,949.91

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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.