Home / 20,517.88-28,314.69-11,086.46

Finding the Fourth Proportional to 20,517.88, 28,314.69 and 11,086.46

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Solution

The fourth proportional to 20,517.88, 28,314.69 and 11,086.46 is: 15,299.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.88 : 28,314.69 = 11,086.46 : x
  2. Step 2: Convert to fraction form
    20,517.88/28,314.69 = 11,086.46/x
  3. Step 3: Cross multiply
    20,517.88x = 28,314.69 × 11,086.46
  4. Step 4: Simplify right side
    20,517.88x = 313,909,678.10
  5. Step 5: Solve for x
    x = 313,909,678.10/20,517.88
  6. Step 6: Final answer
    x = 15,299.32

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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.