Home / 20,664.70-28,517.30-11,233.26

Finding the Fourth Proportional to 20,664.70, 28,517.30 and 11,233.26

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Solution

The fourth proportional to 20,664.70, 28,517.30 and 11,233.26 is: 15,501.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.70 : 28,517.30 = 11,233.26 : x
  2. Step 2: Convert to fraction form
    20,664.70/28,517.30 = 11,233.26/x
  3. Step 3: Cross multiply
    20,664.70x = 28,517.30 × 11,233.26
  4. Step 4: Simplify right side
    20,664.70x = 320,342,245.40
  5. Step 5: Solve for x
    x = 320,342,245.40/20,664.70
  6. Step 6: Final answer
    x = 15,501.91

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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.