Home / 31,254.22-43,122.75-18,507.65

Finding the Fourth Proportional to 31,254.22, 43,122.75 and 18,507.65

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Solution

The fourth proportional to 31,254.22, 43,122.75 and 18,507.65 is: 25,535.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,254.22 : 43,122.75 = 18,507.65 : x
  2. Step 2: Convert to fraction form
    31,254.22/43,122.75 = 18,507.65/x
  3. Step 3: Cross multiply
    31,254.22x = 43,122.75 × 18,507.65
  4. Step 4: Simplify right side
    31,254.22x = 798,100,764.04
  5. Step 5: Solve for x
    x = 798,100,764.04/31,254.22
  6. Step 6: Final answer
    x = 25,535.78

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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.