Home / 20,169.11-30,257.17-7,690.25

Finding the Fourth Proportional to 20,169.11, 30,257.17 and 7,690.25

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Solution

The fourth proportional to 20,169.11, 30,257.17 and 7,690.25 is: 11,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.11 : 30,257.17 = 7,690.25 : x
  2. Step 2: Convert to fraction form
    20,169.11/30,257.17 = 7,690.25/x
  3. Step 3: Cross multiply
    20,169.11x = 30,257.17 × 7,690.25
  4. Step 4: Simplify right side
    20,169.11x = 232,685,031.08
  5. Step 5: Solve for x
    x = 232,685,031.08/20,169.11
  6. Step 6: Final answer
    x = 11,536.71

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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.