Home / 15,185.67-20,956.11-8,471.37

Finding the Fourth Proportional to 15,185.67, 20,956.11 and 8,471.37

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Solution

The fourth proportional to 15,185.67, 20,956.11 and 8,471.37 is: 11,690.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.67 : 20,956.11 = 8,471.37 : x
  2. Step 2: Convert to fraction form
    15,185.67/20,956.11 = 8,471.37/x
  3. Step 3: Cross multiply
    15,185.67x = 20,956.11 × 8,471.37
  4. Step 4: Simplify right side
    15,185.67x = 177,526,961.57
  5. Step 5: Solve for x
    x = 177,526,961.57/15,185.67
  6. Step 6: Final answer
    x = 11,690.43

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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.