Home / 39,191.58-54,085.35-21,286.38

Finding the Fourth Proportional to 39,191.58, 54,085.35 and 21,286.38

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Solution

The fourth proportional to 39,191.58, 54,085.35 and 21,286.38 is: 29,375.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,191.58 : 54,085.35 = 21,286.38 : x
  2. Step 2: Convert to fraction form
    39,191.58/54,085.35 = 21,286.38/x
  3. Step 3: Cross multiply
    39,191.58x = 54,085.35 × 21,286.38
  4. Step 4: Simplify right side
    39,191.58x = 1,151,281,312.53
  5. Step 5: Solve for x
    x = 1,151,281,312.53/39,191.58
  6. Step 6: Final answer
    x = 29,375.73

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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.