Home / 20,763.09-28,657.67-13,207.95

Finding the Fourth Proportional to 20,763.09, 28,657.67 and 13,207.95

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Solution

The fourth proportional to 20,763.09, 28,657.67 and 13,207.95 is: 18,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.09 : 28,657.67 = 13,207.95 : x
  2. Step 2: Convert to fraction form
    20,763.09/28,657.67 = 13,207.95/x
  3. Step 3: Cross multiply
    20,763.09x = 28,657.67 × 13,207.95
  4. Step 4: Simplify right side
    20,763.09x = 378,509,006.44
  5. Step 5: Solve for x
    x = 378,509,006.44/20,763.09
  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.