Home / 20,759.20-28,618.02-12,796.12

Finding the Fourth Proportional to 20,759.20, 28,618.02 and 12,796.12

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Solution

The fourth proportional to 20,759.20, 28,618.02 and 12,796.12 is: 17,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.20 : 28,618.02 = 12,796.12 : x
  2. Step 2: Convert to fraction form
    20,759.20/28,618.02 = 12,796.12/x
  3. Step 3: Cross multiply
    20,759.20x = 28,618.02 × 12,796.12
  4. Step 4: Simplify right side
    20,759.20x = 366,199,618.08
  5. Step 5: Solve for x
    x = 366,199,618.08/20,759.20
  6. Step 6: Final answer
    x = 17,640.35

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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.