Home / 31,712.96-43,761.30-18,275.19

Finding the Fourth Proportional to 31,712.96, 43,761.30 and 18,275.19

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Solution

The fourth proportional to 31,712.96, 43,761.30 and 18,275.19 is: 25,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,712.96 : 43,761.30 = 18,275.19 : x
  2. Step 2: Convert to fraction form
    31,712.96/43,761.30 = 18,275.19/x
  3. Step 3: Cross multiply
    31,712.96x = 43,761.30 × 18,275.19
  4. Step 4: Simplify right side
    31,712.96x = 799,746,072.15
  5. Step 5: Solve for x
    x = 799,746,072.15/31,712.96
  6. Step 6: Final answer
    x = 25,218.28

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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.