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Finding the Fourth Proportional to 18,652.80, 27,979.20 and 16,773.60

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Solution

The fourth proportional to 18,652.80, 27,979.20 and 16,773.60 is: 25,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.80 : 27,979.20 = 16,773.60 : x
  2. Step 2: Convert to fraction form
    18,652.80/27,979.20 = 16,773.60/x
  3. Step 3: Cross multiply
    18,652.80x = 27,979.20 × 16,773.60
  4. Step 4: Simplify right side
    18,652.80x = 469,311,909.12
  5. Step 5: Solve for x
    x = 469,311,909.12/18,652.80
  6. Step 6: Final answer
    x = 25,160.40

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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.