Home / 39,679.29-54,757.27-21,774.60

Finding the Fourth Proportional to 39,679.29, 54,757.27 and 21,774.60

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Solution

The fourth proportional to 39,679.29, 54,757.27 and 21,774.60 is: 30,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.29 : 54,757.27 = 21,774.60 : x
  2. Step 2: Convert to fraction form
    39,679.29/54,757.27 = 21,774.60/x
  3. Step 3: Cross multiply
    39,679.29x = 54,757.27 × 21,774.60
  4. Step 4: Simplify right side
    39,679.29x = 1,192,317,678.56
  5. Step 5: Solve for x
    x = 1,192,317,678.56/39,679.29
  6. Step 6: Final answer
    x = 30,048.87

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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.