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Finding the Fourth Proportional to 16,641.20, 24,961.80 and 9,642.80

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Solution

The fourth proportional to 16,641.20, 24,961.80 and 9,642.80 is: 14,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,641.20 : 24,961.80 = 9,642.80 : x
  2. Step 2: Convert to fraction form
    16,641.20/24,961.80 = 9,642.80/x
  3. Step 3: Cross multiply
    16,641.20x = 24,961.80 × 9,642.80
  4. Step 4: Simplify right side
    16,641.20x = 240,701,645.04
  5. Step 5: Solve for x
    x = 240,701,645.04/16,641.20
  6. Step 6: Final answer
    x = 14,464.20

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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.