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Finding the Fourth Proportional to 18,462.56, 27,649.68 and 10,129.76

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Solution

The fourth proportional to 18,462.56, 27,649.68 and 10,129.76 is: 15,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.56 : 27,649.68 = 10,129.76 : x
  2. Step 2: Convert to fraction form
    18,462.56/27,649.68 = 10,129.76/x
  3. Step 3: Cross multiply
    18,462.56x = 27,649.68 × 10,129.76
  4. Step 4: Simplify right side
    18,462.56x = 280,084,622.48
  5. Step 5: Solve for x
    x = 280,084,622.48/18,462.56
  6. Step 6: Final answer
    x = 15,170.41

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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.