Home / 15,068.75-20,799.20-9,100.85

Finding the Fourth Proportional to 15,068.75, 20,799.20 and 9,100.85

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Solution

The fourth proportional to 15,068.75, 20,799.20 and 9,100.85 is: 12,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,068.75 : 20,799.20 = 9,100.85 : x
  2. Step 2: Convert to fraction form
    15,068.75/20,799.20 = 9,100.85/x
  3. Step 3: Cross multiply
    15,068.75x = 20,799.20 × 9,100.85
  4. Step 4: Simplify right side
    15,068.75x = 189,290,249.82
  5. Step 5: Solve for x
    x = 189,290,249.82/15,068.75
  6. Step 6: Final answer
    x = 12,561.78

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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.