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Finding the Fourth Proportional to 31,640.88, 47,461.32 and 8,267.34

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Solution

The fourth proportional to 31,640.88, 47,461.32 and 8,267.34 is: 12,401.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.88 : 47,461.32 = 8,267.34 : x
  2. Step 2: Convert to fraction form
    31,640.88/47,461.32 = 8,267.34/x
  3. Step 3: Cross multiply
    31,640.88x = 47,461.32 × 8,267.34
  4. Step 4: Simplify right side
    31,640.88x = 392,378,869.29
  5. Step 5: Solve for x
    x = 392,378,869.29/31,640.88
  6. Step 6: Final answer
    x = 12,401.01

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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.