Home / 39,749.28-54,851.35-21,843.90

Finding the Fourth Proportional to 39,749.28, 54,851.35 and 21,843.90

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Solution

The fourth proportional to 39,749.28, 54,851.35 and 21,843.90 is: 30,143.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,749.28 : 54,851.35 = 21,843.90 : x
  2. Step 2: Convert to fraction form
    39,749.28/54,851.35 = 21,843.90/x
  3. Step 3: Cross multiply
    39,749.28x = 54,851.35 × 21,843.90
  4. Step 4: Simplify right side
    39,749.28x = 1,198,167,020.79
  5. Step 5: Solve for x
    x = 1,198,167,020.79/39,749.28
  6. Step 6: Final answer
    x = 30,143.12

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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.