Home / 31,679.66-43,707.25-18,250.57

Finding the Fourth Proportional to 31,679.66, 43,707.25 and 18,250.57

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Solution

The fourth proportional to 31,679.66, 43,707.25 and 18,250.57 is: 25,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,679.66 : 43,707.25 = 18,250.57 : x
  2. Step 2: Convert to fraction form
    31,679.66/43,707.25 = 18,250.57/x
  3. Step 3: Cross multiply
    31,679.66x = 43,707.25 × 18,250.57
  4. Step 4: Simplify right side
    31,679.66x = 797,682,070.74
  5. Step 5: Solve for x
    x = 797,682,070.74/31,679.66
  6. Step 6: Final answer
    x = 25,179.63

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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.