Home / 31,240.89-43,109.82-17,811.90

Finding the Fourth Proportional to 31,240.89, 43,109.82 and 17,811.90

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Solution

The fourth proportional to 31,240.89, 43,109.82 and 17,811.90 is: 24,578.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,240.89 : 43,109.82 = 17,811.90 : x
  2. Step 2: Convert to fraction form
    31,240.89/43,109.82 = 17,811.90/x
  3. Step 3: Cross multiply
    31,240.89x = 43,109.82 × 17,811.90
  4. Step 4: Simplify right side
    31,240.89x = 767,867,802.86
  5. Step 5: Solve for x
    x = 767,867,802.86/31,240.89
  6. Step 6: Final answer
    x = 24,578.93

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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.