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Finding the Fourth Proportional to 18,660.24, 28,002.24 and 8,799.12

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Solution

The fourth proportional to 18,660.24, 28,002.24 and 8,799.12 is: 13,204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.24 : 28,002.24 = 8,799.12 : x
  2. Step 2: Convert to fraction form
    18,660.24/28,002.24 = 8,799.12/x
  3. Step 3: Cross multiply
    18,660.24x = 28,002.24 × 8,799.12
  4. Step 4: Simplify right side
    18,660.24x = 246,395,070.03
  5. Step 5: Solve for x
    x = 246,395,070.03/18,660.24
  6. Step 6: Final answer
    x = 13,204.28

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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.