Home / 20,947.87-28,908.26-11,517.04

Finding the Fourth Proportional to 20,947.87, 28,908.26 and 11,517.04

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Solution

The fourth proportional to 20,947.87, 28,908.26 and 11,517.04 is: 15,893.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.87 : 28,908.26 = 11,517.04 : x
  2. Step 2: Convert to fraction form
    20,947.87/28,908.26 = 11,517.04/x
  3. Step 3: Cross multiply
    20,947.87x = 28,908.26 × 11,517.04
  4. Step 4: Simplify right side
    20,947.87x = 332,937,586.75
  5. Step 5: Solve for x
    x = 332,937,586.75/20,947.87
  6. Step 6: Final answer
    x = 15,893.62

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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.