Home / 20,454.54-28,226.85-11,379.70

Finding the Fourth Proportional to 20,454.54, 28,226.85 and 11,379.70

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Solution

The fourth proportional to 20,454.54, 28,226.85 and 11,379.70 is: 15,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.54 : 28,226.85 = 11,379.70 : x
  2. Step 2: Convert to fraction form
    20,454.54/28,226.85 = 11,379.70/x
  3. Step 3: Cross multiply
    20,454.54x = 28,226.85 × 11,379.70
  4. Step 4: Simplify right side
    20,454.54x = 321,213,084.95
  5. Step 5: Solve for x
    x = 321,213,084.95/20,454.54
  6. Step 6: Final answer
    x = 15,703.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.