Home / 31,268.72-43,151.35-17,120.65

Finding the Fourth Proportional to 31,268.72, 43,151.35 and 17,120.65

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Solution

The fourth proportional to 31,268.72, 43,151.35 and 17,120.65 is: 23,626.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,268.72 : 43,151.35 = 17,120.65 : x
  2. Step 2: Convert to fraction form
    31,268.72/43,151.35 = 17,120.65/x
  3. Step 3: Cross multiply
    31,268.72x = 43,151.35 × 17,120.65
  4. Step 4: Simplify right side
    31,268.72x = 738,779,160.38
  5. Step 5: Solve for x
    x = 738,779,160.38/31,268.72
  6. Step 6: Final answer
    x = 23,626.78

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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.