Home / 39,191.20-54,083.64-21,286.06

Finding the Fourth Proportional to 39,191.20, 54,083.64 and 21,286.06

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Solution

The fourth proportional to 39,191.20, 54,083.64 and 21,286.06 is: 29,374.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,191.20 : 54,083.64 = 21,286.06 : x
  2. Step 2: Convert to fraction form
    39,191.20/54,083.64 = 21,286.06/x
  3. Step 3: Cross multiply
    39,191.20x = 54,083.64 × 21,286.06
  4. Step 4: Simplify right side
    39,191.20x = 1,151,227,606.06
  5. Step 5: Solve for x
    x = 1,151,227,606.06/39,191.20
  6. Step 6: Final answer
    x = 29,374.65

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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.