Home / 25,519.68-38,279.52-7,990.88

Finding the Fourth Proportional to 25,519.68, 38,279.52 and 7,990.88

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Solution

The fourth proportional to 25,519.68, 38,279.52 and 7,990.88 is: 11,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,519.68 : 38,279.52 = 7,990.88 : x
  2. Step 2: Convert to fraction form
    25,519.68/38,279.52 = 7,990.88/x
  3. Step 3: Cross multiply
    25,519.68x = 38,279.52 × 7,990.88
  4. Step 4: Simplify right side
    25,519.68x = 305,886,859.38
  5. Step 5: Solve for x
    x = 305,886,859.38/25,519.68
  6. Step 6: Final answer
    x = 11,986.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.