Home / 13,800.83-20,695.56-5,479.70

Finding the Fourth Proportional to 13,800.83, 20,695.56 and 5,479.70

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Solution

The fourth proportional to 13,800.83, 20,695.56 and 5,479.70 is: 8,217.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,800.83 : 20,695.56 = 5,479.70 : x
  2. Step 2: Convert to fraction form
    13,800.83/20,695.56 = 5,479.70/x
  3. Step 3: Cross multiply
    13,800.83x = 20,695.56 × 5,479.70
  4. Step 4: Simplify right side
    13,800.83x = 113,405,460.13
  5. Step 5: Solve for x
    x = 113,405,460.13/13,800.83
  6. Step 6: Final answer
    x = 8,217.29

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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.