Home / 31,876.34-47,812.68-12,156.89

Finding the Fourth Proportional to 31,876.34, 47,812.68 and 12,156.89

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Solution

The fourth proportional to 31,876.34, 47,812.68 and 12,156.89 is: 18,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,876.34 : 47,812.68 = 12,156.89 : x
  2. Step 2: Convert to fraction form
    31,876.34/47,812.68 = 12,156.89/x
  3. Step 3: Cross multiply
    31,876.34x = 47,812.68 × 12,156.89
  4. Step 4: Simplify right side
    31,876.34x = 581,253,252.30
  5. Step 5: Solve for x
    x = 581,253,252.30/31,876.34
  6. Step 6: Final answer
    x = 18,234.63

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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.