Home / 39,191.74-54,085-21,286.94

Finding the Fourth Proportional to 39,191.74, 54,085 and 21,286.94

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Solution

The fourth proportional to 39,191.74, 54,085 and 21,286.94 is: 29,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,191.74 : 54,085 = 21,286.94 : x
  2. Step 2: Convert to fraction form
    39,191.74/54,085 = 21,286.94/x
  3. Step 3: Cross multiply
    39,191.74x = 54,085 × 21,286.94
  4. Step 4: Simplify right side
    39,191.74x = 1,151,304,149.90
  5. Step 5: Solve for x
    x = 1,151,304,149.90/39,191.74
  6. Step 6: Final answer
    x = 29,376.19

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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.