Home / 20,759.83-28,648.15-11,328.55

Finding the Fourth Proportional to 20,759.83, 28,648.15 and 11,328.55

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Solution

The fourth proportional to 20,759.83, 28,648.15 and 11,328.55 is: 15,633.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.83 : 28,648.15 = 11,328.55 : x
  2. Step 2: Convert to fraction form
    20,759.83/28,648.15 = 11,328.55/x
  3. Step 3: Cross multiply
    20,759.83x = 28,648.15 × 11,328.55
  4. Step 4: Simplify right side
    20,759.83x = 324,541,999.68
  5. Step 5: Solve for x
    x = 324,541,999.68/20,759.83
  6. Step 6: Final answer
    x = 15,633.17

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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.