Home / 10,961.92-16,419.84-5,123.20

Finding the Fourth Proportional to 10,961.92, 16,419.84 and 5,123.20

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Solution

The fourth proportional to 10,961.92, 16,419.84 and 5,123.20 is: 7,674.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.92 : 16,419.84 = 5,123.20 : x
  2. Step 2: Convert to fraction form
    10,961.92/16,419.84 = 5,123.20/x
  3. Step 3: Cross multiply
    10,961.92x = 16,419.84 × 5,123.20
  4. Step 4: Simplify right side
    10,961.92x = 84,122,124.29
  5. Step 5: Solve for x
    x = 84,122,124.29/10,961.92
  6. Step 6: Final answer
    x = 7,674.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.