Home / 10,956.98-15,119.79-6,480.38

Finding the Fourth Proportional to 10,956.98, 15,119.79 and 6,480.38

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Solution

The fourth proportional to 10,956.98, 15,119.79 and 6,480.38 is: 8,942.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.98 : 15,119.79 = 6,480.38 : x
  2. Step 2: Convert to fraction form
    10,956.98/15,119.79 = 6,480.38/x
  3. Step 3: Cross multiply
    10,956.98x = 15,119.79 × 6,480.38
  4. Step 4: Simplify right side
    10,956.98x = 97,981,984.72
  5. Step 5: Solve for x
    x = 97,981,984.72/10,956.98
  6. Step 6: Final answer
    x = 8,942.43

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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.