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Finding the Fourth Proportional to 18,187.52, 25,098.88 and 10,739.20

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Solution

The fourth proportional to 18,187.52, 25,098.88 and 10,739.20 is: 14,820.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.52 : 25,098.88 = 10,739.20 : x
  2. Step 2: Convert to fraction form
    18,187.52/25,098.88 = 10,739.20/x
  3. Step 3: Cross multiply
    18,187.52x = 25,098.88 × 10,739.20
  4. Step 4: Simplify right side
    18,187.52x = 269,541,892.10
  5. Step 5: Solve for x
    x = 269,541,892.10/18,187.52
  6. Step 6: Final answer
    x = 14,820.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.