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Finding the Fourth Proportional to 18,439.76, 27,659.90 and 4,588.76

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Solution

The fourth proportional to 18,439.76, 27,659.90 and 4,588.76 is: 6,883.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.76 : 27,659.90 = 4,588.76 : x
  2. Step 2: Convert to fraction form
    18,439.76/27,659.90 = 4,588.76/x
  3. Step 3: Cross multiply
    18,439.76x = 27,659.90 × 4,588.76
  4. Step 4: Simplify right side
    18,439.76x = 126,924,642.72
  5. Step 5: Solve for x
    x = 126,924,642.72/18,439.76
  6. Step 6: Final answer
    x = 6,883.20

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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.