Home / 31,883.35-47,823.18-12,163.90

Finding the Fourth Proportional to 31,883.35, 47,823.18 and 12,163.90

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Solution

The fourth proportional to 31,883.35, 47,823.18 and 12,163.90 is: 18,245.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,883.35 : 47,823.18 = 12,163.90 : x
  2. Step 2: Convert to fraction form
    31,883.35/47,823.18 = 12,163.90/x
  3. Step 3: Cross multiply
    31,883.35x = 47,823.18 × 12,163.90
  4. Step 4: Simplify right side
    31,883.35x = 581,716,379.20
  5. Step 5: Solve for x
    x = 581,716,379.20/31,883.35
  6. Step 6: Final answer
    x = 18,245.15

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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.