Home / 31,685.85-43,731.09-18,254.52

Finding the Fourth Proportional to 31,685.85, 43,731.09 and 18,254.52

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Solution

The fourth proportional to 31,685.85, 43,731.09 and 18,254.52 is: 25,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.85 : 43,731.09 = 18,254.52 : x
  2. Step 2: Convert to fraction form
    31,685.85/43,731.09 = 18,254.52/x
  3. Step 3: Cross multiply
    31,685.85x = 43,731.09 × 18,254.52
  4. Step 4: Simplify right side
    31,685.85x = 798,290,057.03
  5. Step 5: Solve for x
    x = 798,290,057.03/31,685.85
  6. Step 6: Final answer
    x = 25,193.90

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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.