Home / 20,763.10-28,657.66-13,207.96

Finding the Fourth Proportional to 20,763.10, 28,657.66 and 13,207.96

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Solution

The fourth proportional to 20,763.10, 28,657.66 and 13,207.96 is: 18,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.10 : 28,657.66 = 13,207.96 : x
  2. Step 2: Convert to fraction form
    20,763.10/28,657.66 = 13,207.96/x
  3. Step 3: Cross multiply
    20,763.10x = 28,657.66 × 13,207.96
  4. Step 4: Simplify right side
    20,763.10x = 378,509,226.97
  5. Step 5: Solve for x
    x = 378,509,226.97/20,763.10
  6. Step 6: Final answer
    x = 18,229.90

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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.