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Finding the Fourth Proportional to 18,247.25, 27,379.11 and 10,456.06

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Solution

The fourth proportional to 18,247.25, 27,379.11 and 10,456.06 is: 15,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,247.25 : 27,379.11 = 10,456.06 : x
  2. Step 2: Convert to fraction form
    18,247.25/27,379.11 = 10,456.06/x
  3. Step 3: Cross multiply
    18,247.25x = 27,379.11 × 10,456.06
  4. Step 4: Simplify right side
    18,247.25x = 286,277,616.91
  5. Step 5: Solve for x
    x = 286,277,616.91/18,247.25
  6. Step 6: Final answer
    x = 15,688.81

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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.