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Finding the Fourth Proportional to 16,121.10, 24,181.65 and 9,209.10

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Solution

The fourth proportional to 16,121.10, 24,181.65 and 9,209.10 is: 13,813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,121.10 : 24,181.65 = 9,209.10 : x
  2. Step 2: Convert to fraction form
    16,121.10/24,181.65 = 9,209.10/x
  3. Step 3: Cross multiply
    16,121.10x = 24,181.65 × 9,209.10
  4. Step 4: Simplify right side
    16,121.10x = 222,691,233.02
  5. Step 5: Solve for x
    x = 222,691,233.02/16,121.10
  6. Step 6: Final answer
    x = 13,813.65

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Similar ratio
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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.