Home / 13,799.83-20,694.06-5,478.70

Finding the Fourth Proportional to 13,799.83, 20,694.06 and 5,478.70

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Solution

The fourth proportional to 13,799.83, 20,694.06 and 5,478.70 is: 8,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.83 : 20,694.06 = 5,478.70 : x
  2. Step 2: Convert to fraction form
    13,799.83/20,694.06 = 5,478.70/x
  3. Step 3: Cross multiply
    13,799.83x = 20,694.06 × 5,478.70
  4. Step 4: Simplify right side
    13,799.83x = 113,376,546.52
  5. Step 5: Solve for x
    x = 113,376,546.52/13,799.83
  6. Step 6: Final answer
    x = 8,215.79

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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.