Home / 31,874-43,988.68-18,628.56

Finding the Fourth Proportional to 31,874, 43,988.68 and 18,628.56

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Solution

The fourth proportional to 31,874, 43,988.68 and 18,628.56 is: 25,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,874 : 43,988.68 = 18,628.56 : x
  2. Step 2: Convert to fraction form
    31,874/43,988.68 = 18,628.56/x
  3. Step 3: Cross multiply
    31,874x = 43,988.68 × 18,628.56
  4. Step 4: Simplify right side
    31,874x = 819,445,764.70
  5. Step 5: Solve for x
    x = 819,445,764.70/31,874
  6. Step 6: Final answer
    x = 25,708.91

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1.5x scale

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.