Home / 39,404.41-54,378.26-21,499.79

Finding the Fourth Proportional to 39,404.41, 54,378.26 and 21,499.79

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Solution

The fourth proportional to 39,404.41, 54,378.26 and 21,499.79 is: 29,669.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,404.41 : 54,378.26 = 21,499.79 : x
  2. Step 2: Convert to fraction form
    39,404.41/54,378.26 = 21,499.79/x
  3. Step 3: Cross multiply
    39,404.41x = 54,378.26 × 21,499.79
  4. Step 4: Simplify right side
    39,404.41x = 1,169,121,170.57
  5. Step 5: Solve for x
    x = 1,169,121,170.57/39,404.41
  6. Step 6: Final answer
    x = 29,669.81

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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.