Home / 15,185.76-20,956.68-8,471.94

Finding the Fourth Proportional to 15,185.76, 20,956.68 and 8,471.94

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Solution

The fourth proportional to 15,185.76, 20,956.68 and 8,471.94 is: 11,691.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.76 : 20,956.68 = 8,471.94 : x
  2. Step 2: Convert to fraction form
    15,185.76/20,956.68 = 8,471.94/x
  3. Step 3: Cross multiply
    15,185.76x = 20,956.68 × 8,471.94
  4. Step 4: Simplify right side
    15,185.76x = 177,543,735.56
  5. Step 5: Solve for x
    x = 177,543,735.56/15,185.76
  6. Step 6: Final answer
    x = 11,691.46

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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.