Home / 31,277.12-43,147.84-18,697.28

Finding the Fourth Proportional to 31,277.12, 43,147.84 and 18,697.28

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Solution

The fourth proportional to 31,277.12, 43,147.84 and 18,697.28 is: 25,793.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,277.12 : 43,147.84 = 18,697.28 : x
  2. Step 2: Convert to fraction form
    31,277.12/43,147.84 = 18,697.28/x
  3. Step 3: Cross multiply
    31,277.12x = 43,147.84 × 18,697.28
  4. Step 4: Simplify right side
    31,277.12x = 806,747,245.88
  5. Step 5: Solve for x
    x = 806,747,245.88/31,277.12
  6. Step 6: Final answer
    x = 25,793.53

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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.