Home / 20,563.75-28,377.98-11,132.31

Finding the Fourth Proportional to 20,563.75, 28,377.98 and 11,132.31

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Solution

The fourth proportional to 20,563.75, 28,377.98 and 11,132.31 is: 15,362.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.75 : 28,377.98 = 11,132.31 : x
  2. Step 2: Convert to fraction form
    20,563.75/28,377.98 = 11,132.31/x
  3. Step 3: Cross multiply
    20,563.75x = 28,377.98 × 11,132.31
  4. Step 4: Simplify right side
    20,563.75x = 315,912,470.53
  5. Step 5: Solve for x
    x = 315,912,470.53/20,563.75
  6. Step 6: Final answer
    x = 15,362.59

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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.