Home / 39,191.68-54,085.08-21,286.72

Finding the Fourth Proportional to 39,191.68, 54,085.08 and 21,286.72

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Solution

The fourth proportional to 39,191.68, 54,085.08 and 21,286.72 is: 29,375.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,191.68 : 54,085.08 = 21,286.72 : x
  2. Step 2: Convert to fraction form
    39,191.68/54,085.08 = 21,286.72/x
  3. Step 3: Cross multiply
    39,191.68x = 54,085.08 × 21,286.72
  4. Step 4: Simplify right side
    39,191.68x = 1,151,293,954.14
  5. Step 5: Solve for x
    x = 1,151,293,954.14/39,191.68
  6. Step 6: Final answer
    x = 29,375.98

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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.