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Finding the Fourth Proportional to 18,231.80, 27,347.72 and 10,435.14

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Solution

The fourth proportional to 18,231.80, 27,347.72 and 10,435.14 is: 15,652.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.80 : 27,347.72 = 10,435.14 : x
  2. Step 2: Convert to fraction form
    18,231.80/27,347.72 = 10,435.14/x
  3. Step 3: Cross multiply
    18,231.80x = 27,347.72 × 10,435.14
  4. Step 4: Simplify right side
    18,231.80x = 285,377,234.71
  5. Step 5: Solve for x
    x = 285,377,234.71/18,231.80
  6. Step 6: Final answer
    x = 15,652.72

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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.