Home / 31,638.38-47,457.57-8,264.78

Finding the Fourth Proportional to 31,638.38, 47,457.57 and 8,264.78

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Solution

The fourth proportional to 31,638.38, 47,457.57 and 8,264.78 is: 12,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.38 : 47,457.57 = 8,264.78 : x
  2. Step 2: Convert to fraction form
    31,638.38/47,457.57 = 8,264.78/x
  3. Step 3: Cross multiply
    31,638.38x = 47,457.57 × 8,264.78
  4. Step 4: Simplify right side
    31,638.38x = 392,226,375.38
  5. Step 5: Solve for x
    x = 392,226,375.38/31,638.38
  6. Step 6: Final answer
    x = 12,397.17

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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.