Home / 25,679.60-38,519.40-15,786.80

Finding the Fourth Proportional to 25,679.60, 38,519.40 and 15,786.80

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Solution

The fourth proportional to 25,679.60, 38,519.40 and 15,786.80 is: 23,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,679.60 : 38,519.40 = 15,786.80 : x
  2. Step 2: Convert to fraction form
    25,679.60/38,519.40 = 15,786.80/x
  3. Step 3: Cross multiply
    25,679.60x = 38,519.40 × 15,786.80
  4. Step 4: Simplify right side
    25,679.60x = 608,098,063.92
  5. Step 5: Solve for x
    x = 608,098,063.92/25,679.60
  6. Step 6: Final answer
    x = 23,680.20

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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.