Home / 20,739.97-31,114.56-5,947.75

Finding the Fourth Proportional to 20,739.97, 31,114.56 and 5,947.75

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Solution

The fourth proportional to 20,739.97, 31,114.56 and 5,947.75 is: 8,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.97 : 31,114.56 = 5,947.75 : x
  2. Step 2: Convert to fraction form
    20,739.97/31,114.56 = 5,947.75/x
  3. Step 3: Cross multiply
    20,739.97x = 31,114.56 × 5,947.75
  4. Step 4: Simplify right side
    20,739.97x = 185,061,535.30
  5. Step 5: Solve for x
    x = 185,061,535.30/20,739.97
  6. Step 6: Final answer
    x = 8,922.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.