Home / 39,679.26-54,757.79-21,775.42

Finding the Fourth Proportional to 39,679.26, 54,757.79 and 21,775.42

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Solution

The fourth proportional to 39,679.26, 54,757.79 and 21,775.42 is: 30,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.26 : 54,757.79 = 21,775.42 : x
  2. Step 2: Convert to fraction form
    39,679.26/54,757.79 = 21,775.42/x
  3. Step 3: Cross multiply
    39,679.26x = 54,757.79 × 21,775.42
  4. Step 4: Simplify right side
    39,679.26x = 1,192,373,875.52
  5. Step 5: Solve for x
    x = 1,192,373,875.52/39,679.26
  6. Step 6: Final answer
    x = 30,050.31

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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.