Home / 31,286-43,167.96-18,543.18

Finding the Fourth Proportional to 31,286, 43,167.96 and 18,543.18

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Solution

The fourth proportional to 31,286, 43,167.96 and 18,543.18 is: 25,585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286 : 43,167.96 = 18,543.18 : x
  2. Step 2: Convert to fraction form
    31,286/43,167.96 = 18,543.18/x
  3. Step 3: Cross multiply
    31,286x = 43,167.96 × 18,543.18
  4. Step 4: Simplify right side
    31,286x = 800,471,252.51
  5. Step 5: Solve for x
    x = 800,471,252.51/31,286
  6. Step 6: Final answer
    x = 25,585.61

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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.