Home / 31,381.78-47,079.15-9,195.88

Finding the Fourth Proportional to 31,381.78, 47,079.15 and 9,195.88

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Solution

The fourth proportional to 31,381.78, 47,079.15 and 9,195.88 is: 13,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381.78 : 47,079.15 = 9,195.88 : x
  2. Step 2: Convert to fraction form
    31,381.78/47,079.15 = 9,195.88/x
  3. Step 3: Cross multiply
    31,381.78x = 47,079.15 × 9,195.88
  4. Step 4: Simplify right side
    31,381.78x = 432,934,213.90
  5. Step 5: Solve for x
    x = 432,934,213.90/31,381.78
  6. Step 6: Final answer
    x = 13,795.72

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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.