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Finding the Fourth Proportional to 18,287.71, 27,431.53 and 6,600.91

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Solution

The fourth proportional to 18,287.71, 27,431.53 and 6,600.91 is: 9,901.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.71 : 27,431.53 = 6,600.91 : x
  2. Step 2: Convert to fraction form
    18,287.71/27,431.53 = 6,600.91/x
  3. Step 3: Cross multiply
    18,287.71x = 27,431.53 × 6,600.91
  4. Step 4: Simplify right side
    18,287.71x = 181,073,060.69
  5. Step 5: Solve for x
    x = 181,073,060.69/18,287.71
  6. Step 6: Final answer
    x = 9,901.35

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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.