Home / 31,811.90-43,900.17-17,664.78

Finding the Fourth Proportional to 31,811.90, 43,900.17 and 17,664.78

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Solution

The fourth proportional to 31,811.90, 43,900.17 and 17,664.78 is: 24,377.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.90 : 43,900.17 = 17,664.78 : x
  2. Step 2: Convert to fraction form
    31,811.90/43,900.17 = 17,664.78/x
  3. Step 3: Cross multiply
    31,811.90x = 43,900.17 × 17,664.78
  4. Step 4: Simplify right side
    31,811.90x = 775,486,845.01
  5. Step 5: Solve for x
    x = 775,486,845.01/31,811.90
  6. Step 6: Final answer
    x = 24,377.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.