Home / 31,781.22-47,671.86-16,209.78

Finding the Fourth Proportional to 31,781.22, 47,671.86 and 16,209.78

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Solution

The fourth proportional to 31,781.22, 47,671.86 and 16,209.78 is: 24,314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.22 : 47,671.86 = 16,209.78 : x
  2. Step 2: Convert to fraction form
    31,781.22/47,671.86 = 16,209.78/x
  3. Step 3: Cross multiply
    31,781.22x = 47,671.86 × 16,209.78
  4. Step 4: Simplify right side
    31,781.22x = 772,750,362.79
  5. Step 5: Solve for x
    x = 772,750,362.79/31,781.22
  6. Step 6: Final answer
    x = 24,314.69

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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.