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Finding the Fourth Proportional to 18,158.32, 27,247.92 and 7,627.42

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Solution

The fourth proportional to 18,158.32, 27,247.92 and 7,627.42 is: 11,445.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.32 : 27,247.92 = 7,627.42 : x
  2. Step 2: Convert to fraction form
    18,158.32/27,247.92 = 7,627.42/x
  3. Step 3: Cross multiply
    18,158.32x = 27,247.92 × 7,627.42
  4. Step 4: Simplify right side
    18,158.32x = 207,831,329.97
  5. Step 5: Solve for x
    x = 207,831,329.97/18,158.32
  6. Step 6: Final answer
    x = 11,445.52

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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.