Home / 20,251.88-30,379.40-5,460.57

Finding the Fourth Proportional to 20,251.88, 30,379.40 and 5,460.57

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Solution

The fourth proportional to 20,251.88, 30,379.40 and 5,460.57 is: 8,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.88 : 30,379.40 = 5,460.57 : x
  2. Step 2: Convert to fraction form
    20,251.88/30,379.40 = 5,460.57/x
  3. Step 3: Cross multiply
    20,251.88x = 30,379.40 × 5,460.57
  4. Step 4: Simplify right side
    20,251.88x = 165,888,853.91
  5. Step 5: Solve for x
    x = 165,888,853.91/20,251.88
  6. Step 6: Final answer
    x = 8,191.28

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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.