Home / 31,755.35-47,636.21-8,381.78

Finding the Fourth Proportional to 31,755.35, 47,636.21 and 8,381.78

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Solution

The fourth proportional to 31,755.35, 47,636.21 and 8,381.78 is: 12,573.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,755.35 : 47,636.21 = 8,381.78 : x
  2. Step 2: Convert to fraction form
    31,755.35/47,636.21 = 8,381.78/x
  3. Step 3: Cross multiply
    31,755.35x = 47,636.21 × 8,381.78
  4. Step 4: Simplify right side
    31,755.35x = 399,275,952.16
  5. Step 5: Solve for x
    x = 399,275,952.16/31,755.35
  6. Step 6: Final answer
    x = 12,573.50

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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.