Home / 31,990.89-47,986.61-12,264.76

Finding the Fourth Proportional to 31,990.89, 47,986.61 and 12,264.76

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Solution

The fourth proportional to 31,990.89, 47,986.61 and 12,264.76 is: 18,397.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,990.89 : 47,986.61 = 12,264.76 : x
  2. Step 2: Convert to fraction form
    31,990.89/47,986.61 = 12,264.76/x
  3. Step 3: Cross multiply
    31,990.89x = 47,986.61 × 12,264.76
  4. Step 4: Simplify right side
    31,990.89x = 588,544,254.86
  5. Step 5: Solve for x
    x = 588,544,254.86/31,990.89
  6. Step 6: Final answer
    x = 18,397.25

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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.