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Finding the Fourth Proportional to 18,025.32, 27,031.08 and 8,659.46

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Solution

The fourth proportional to 18,025.32, 27,031.08 and 8,659.46 is: 12,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,025.32 : 27,031.08 = 8,659.46 : x
  2. Step 2: Convert to fraction form
    18,025.32/27,031.08 = 8,659.46/x
  3. Step 3: Cross multiply
    18,025.32x = 27,031.08 × 8,659.46
  4. Step 4: Simplify right side
    18,025.32x = 234,074,556.02
  5. Step 5: Solve for x
    x = 234,074,556.02/18,025.32
  6. Step 6: Final answer
    x = 12,985.88

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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.