Home / 15,185.64-20,956.22-8,471.70

Finding the Fourth Proportional to 15,185.64, 20,956.22 and 8,471.70

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Solution

The fourth proportional to 15,185.64, 20,956.22 and 8,471.70 is: 11,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.64 : 20,956.22 = 8,471.70 : x
  2. Step 2: Convert to fraction form
    15,185.64/20,956.22 = 8,471.70/x
  3. Step 3: Cross multiply
    15,185.64x = 20,956.22 × 8,471.70
  4. Step 4: Simplify right side
    15,185.64x = 177,534,808.97
  5. Step 5: Solve for x
    x = 177,534,808.97/15,185.64
  6. Step 6: Final answer
    x = 11,690.97

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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.