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Finding the Fourth Proportional to 18,354.28, 27,512.76 and 7,245.70

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Solution

The fourth proportional to 18,354.28, 27,512.76 and 7,245.70 is: 10,861.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.28 : 27,512.76 = 7,245.70 : x
  2. Step 2: Convert to fraction form
    18,354.28/27,512.76 = 7,245.70/x
  3. Step 3: Cross multiply
    18,354.28x = 27,512.76 × 7,245.70
  4. Step 4: Simplify right side
    18,354.28x = 199,349,205.13
  5. Step 5: Solve for x
    x = 199,349,205.13/18,354.28
  6. Step 6: Final answer
    x = 10,861.18

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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.