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Finding the Fourth Proportional to 18,287.91, 27,443.16 and 7,192.71

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Solution

The fourth proportional to 18,287.91, 27,443.16 and 7,192.71 is: 10,793.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.91 : 27,443.16 = 7,192.71 : x
  2. Step 2: Convert to fraction form
    18,287.91/27,443.16 = 7,192.71/x
  3. Step 3: Cross multiply
    18,287.91x = 27,443.16 × 7,192.71
  4. Step 4: Simplify right side
    18,287.91x = 197,390,691.36
  5. Step 5: Solve for x
    x = 197,390,691.36/18,287.91
  6. Step 6: Final answer
    x = 10,793.51

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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.