Home / 31,981.91-47,973.15-12,255.75

Finding the Fourth Proportional to 31,981.91, 47,973.15 and 12,255.75

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Solution

The fourth proportional to 31,981.91, 47,973.15 and 12,255.75 is: 18,383.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.91 : 47,973.15 = 12,255.75 : x
  2. Step 2: Convert to fraction form
    31,981.91/47,973.15 = 12,255.75/x
  3. Step 3: Cross multiply
    31,981.91x = 47,973.15 × 12,255.75
  4. Step 4: Simplify right side
    31,981.91x = 587,946,933.11
  5. Step 5: Solve for x
    x = 587,946,933.11/31,981.91
  6. Step 6: Final answer
    x = 18,383.74

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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.