Home / 25,811.14-38,721.75-8,279.62

Finding the Fourth Proportional to 25,811.14, 38,721.75 and 8,279.62

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Solution

The fourth proportional to 25,811.14, 38,721.75 and 8,279.62 is: 12,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,811.14 : 38,721.75 = 8,279.62 : x
  2. Step 2: Convert to fraction form
    25,811.14/38,721.75 = 8,279.62/x
  3. Step 3: Cross multiply
    25,811.14x = 38,721.75 × 8,279.62
  4. Step 4: Simplify right side
    25,811.14x = 320,601,375.74
  5. Step 5: Solve for x
    x = 320,601,375.74/25,811.14
  6. Step 6: Final answer
    x = 12,421.05

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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.