Home / 16,872.40-25,308.60-8,999.20

Finding the Fourth Proportional to 16,872.40, 25,308.60 and 8,999.20

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Solution

The fourth proportional to 16,872.40, 25,308.60 and 8,999.20 is: 13,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,872.40 : 25,308.60 = 8,999.20 : x
  2. Step 2: Convert to fraction form
    16,872.40/25,308.60 = 8,999.20/x
  3. Step 3: Cross multiply
    16,872.40x = 25,308.60 × 8,999.20
  4. Step 4: Simplify right side
    16,872.40x = 227,757,153.12
  5. Step 5: Solve for x
    x = 227,757,153.12/16,872.40
  6. Step 6: Final answer
    x = 13,498.80

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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.