Home / 39,418.92-54,399.26-21,515.07

Finding the Fourth Proportional to 39,418.92, 54,399.26 and 21,515.07

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Solution

The fourth proportional to 39,418.92, 54,399.26 and 21,515.07 is: 29,691.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.92 : 54,399.26 = 21,515.07 : x
  2. Step 2: Convert to fraction form
    39,418.92/54,399.26 = 21,515.07/x
  3. Step 3: Cross multiply
    39,418.92x = 54,399.26 × 21,515.07
  4. Step 4: Simplify right side
    39,418.92x = 1,170,403,886.85
  5. Step 5: Solve for x
    x = 1,170,403,886.85/39,418.92
  6. Step 6: Final answer
    x = 29,691.42

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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.