Home / 15,125.97-20,867.12-9,819.77

Finding the Fourth Proportional to 15,125.97, 20,867.12 and 9,819.77

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Solution

The fourth proportional to 15,125.97, 20,867.12 and 9,819.77 is: 13,546.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.97 : 20,867.12 = 9,819.77 : x
  2. Step 2: Convert to fraction form
    15,125.97/20,867.12 = 9,819.77/x
  3. Step 3: Cross multiply
    15,125.97x = 20,867.12 × 9,819.77
  4. Step 4: Simplify right side
    15,125.97x = 204,910,202.35
  5. Step 5: Solve for x
    x = 204,910,202.35/15,125.97
  6. Step 6: Final answer
    x = 13,546.91

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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.