Home / 39,249.12-54,131.76-31,693.28

Finding the Fourth Proportional to 39,249.12, 54,131.76 and 31,693.28

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Solution

The fourth proportional to 39,249.12, 54,131.76 and 31,693.28 is: 43,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,249.12 : 54,131.76 = 31,693.28 : x
  2. Step 2: Convert to fraction form
    39,249.12/54,131.76 = 31,693.28/x
  3. Step 3: Cross multiply
    39,249.12x = 54,131.76 × 31,693.28
  4. Step 4: Simplify right side
    39,249.12x = 1,715,613,026.57
  5. Step 5: Solve for x
    x = 1,715,613,026.57/39,249.12
  6. Step 6: Final answer
    x = 43,710.87

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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.