Home / 31,882.35-47,821.68-12,162.90

Finding the Fourth Proportional to 31,882.35, 47,821.68 and 12,162.90

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Solution

The fourth proportional to 31,882.35, 47,821.68 and 12,162.90 is: 18,243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,882.35 : 47,821.68 = 12,162.90 : x
  2. Step 2: Convert to fraction form
    31,882.35/47,821.68 = 12,162.90/x
  3. Step 3: Cross multiply
    31,882.35x = 47,821.68 × 12,162.90
  4. Step 4: Simplify right side
    31,882.35x = 581,650,311.67
  5. Step 5: Solve for x
    x = 581,650,311.67/31,882.35
  6. Step 6: Final answer
    x = 18,243.65

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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.