Home / 31,493.19-47,236.14-12,781.59

Finding the Fourth Proportional to 31,493.19, 47,236.14 and 12,781.59

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Solution

The fourth proportional to 31,493.19, 47,236.14 and 12,781.59 is: 19,170.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,493.19 : 47,236.14 = 12,781.59 : x
  2. Step 2: Convert to fraction form
    31,493.19/47,236.14 = 12,781.59/x
  3. Step 3: Cross multiply
    31,493.19x = 47,236.14 × 12,781.59
  4. Step 4: Simplify right side
    31,493.19x = 603,752,974.66
  5. Step 5: Solve for x
    x = 603,752,974.66/31,493.19
  6. Step 6: Final answer
    x = 19,170.91

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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.