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Finding the Fourth Proportional to 18,213.28, 27,317.20 and 5,064.28

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Solution

The fourth proportional to 18,213.28, 27,317.20 and 5,064.28 is: 7,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.28 : 27,317.20 = 5,064.28 : x
  2. Step 2: Convert to fraction form
    18,213.28/27,317.20 = 5,064.28/x
  3. Step 3: Cross multiply
    18,213.28x = 27,317.20 × 5,064.28
  4. Step 4: Simplify right side
    18,213.28x = 138,341,949.62
  5. Step 5: Solve for x
    x = 138,341,949.62/18,213.28
  6. Step 6: Final answer
    x = 7,595.66

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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.