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Finding the Fourth Proportional to 18,243.60, 24,279.72 and 18,243.60

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Solution

The fourth proportional to 18,243.60, 24,279.72 and 18,243.60 is: 24,279.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.60 : 24,279.72 = 18,243.60 : x
  2. Step 2: Convert to fraction form
    18,243.60/24,279.72 = 18,243.60/x
  3. Step 3: Cross multiply
    18,243.60x = 24,279.72 × 18,243.60
  4. Step 4: Simplify right side
    18,243.60x = 442,949,499.79
  5. Step 5: Solve for x
    x = 442,949,499.79/18,243.60
  6. Step 6: Final answer
    x = 24,279.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.