Home / 25,456.80-38,029.76-20,268.48

Finding the Fourth Proportional to 25,456.80, 38,029.76 and 20,268.48

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Solution

The fourth proportional to 25,456.80, 38,029.76 and 20,268.48 is: 30,278.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,456.80 : 38,029.76 = 20,268.48 : x
  2. Step 2: Convert to fraction form
    25,456.80/38,029.76 = 20,268.48/x
  3. Step 3: Cross multiply
    25,456.80x = 38,029.76 × 20,268.48
  4. Step 4: Simplify right side
    25,456.80x = 770,805,429.96
  5. Step 5: Solve for x
    x = 770,805,429.96/25,456.80
  6. Step 6: Final answer
    x = 30,278.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.