Home / 31,883.40-47,825.10-8,190.90

Finding the Fourth Proportional to 31,883.40, 47,825.10 and 8,190.90

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Solution

The fourth proportional to 31,883.40, 47,825.10 and 8,190.90 is: 12,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,883.40 : 47,825.10 = 8,190.90 : x
  2. Step 2: Convert to fraction form
    31,883.40/47,825.10 = 8,190.90/x
  3. Step 3: Cross multiply
    31,883.40x = 47,825.10 × 8,190.90
  4. Step 4: Simplify right side
    31,883.40x = 391,730,611.59
  5. Step 5: Solve for x
    x = 391,730,611.59/31,883.40
  6. Step 6: Final answer
    x = 12,286.35

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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.