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Finding the Fourth Proportional to 18,493.92, 27,708.58 and 15,393.85

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Solution

The fourth proportional to 18,493.92, 27,708.58 and 15,393.85 is: 23,063.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.92 : 27,708.58 = 15,393.85 : x
  2. Step 2: Convert to fraction form
    18,493.92/27,708.58 = 15,393.85/x
  3. Step 3: Cross multiply
    18,493.92x = 27,708.58 × 15,393.85
  4. Step 4: Simplify right side
    18,493.92x = 426,541,674.20
  5. Step 5: Solve for x
    x = 426,541,674.20/18,493.92
  6. Step 6: Final answer
    x = 23,063.89

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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.