Home / 31,577.28-43,575.04-18,147.20

Finding the Fourth Proportional to 31,577.28, 43,575.04 and 18,147.20

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Solution

The fourth proportional to 31,577.28, 43,575.04 and 18,147.20 is: 25,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,577.28 : 43,575.04 = 18,147.20 : x
  2. Step 2: Convert to fraction form
    31,577.28/43,575.04 = 18,147.20/x
  3. Step 3: Cross multiply
    31,577.28x = 43,575.04 × 18,147.20
  4. Step 4: Simplify right side
    31,577.28x = 790,764,965.89
  5. Step 5: Solve for x
    x = 790,764,965.89/31,577.28
  6. Step 6: Final answer
    x = 25,042.21

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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.