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Finding the Fourth Proportional to 18,342.73, 27,509.67 and 8,472.52

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Solution

The fourth proportional to 18,342.73, 27,509.67 and 8,472.52 is: 12,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.73 : 27,509.67 = 8,472.52 : x
  2. Step 2: Convert to fraction form
    18,342.73/27,509.67 = 8,472.52/x
  3. Step 3: Cross multiply
    18,342.73x = 27,509.67 × 8,472.52
  4. Step 4: Simplify right side
    18,342.73x = 233,076,229.27
  5. Step 5: Solve for x
    x = 233,076,229.27/18,342.73
  6. Step 6: Final answer
    x = 12,706.74

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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.