Home / 31,587.89-43,591.27-18,161.77

Finding the Fourth Proportional to 31,587.89, 43,591.27 and 18,161.77

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Solution

The fourth proportional to 31,587.89, 43,591.27 and 18,161.77 is: 25,063.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,587.89 : 43,591.27 = 18,161.77 : x
  2. Step 2: Convert to fraction form
    31,587.89/43,591.27 = 18,161.77/x
  3. Step 3: Cross multiply
    31,587.89x = 43,591.27 × 18,161.77
  4. Step 4: Simplify right side
    31,587.89x = 791,694,619.75
  5. Step 5: Solve for x
    x = 791,694,619.75/31,587.89
  6. Step 6: Final answer
    x = 25,063.23

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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.