Home / 11,478.70-17,217.58-3,158.11

Finding the Fourth Proportional to 11,478.70, 17,217.58 and 3,158.11

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Solution

The fourth proportional to 11,478.70, 17,217.58 and 3,158.11 is: 4,737.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.70 : 17,217.58 = 3,158.11 : x
  2. Step 2: Convert to fraction form
    11,478.70/17,217.58 = 3,158.11/x
  3. Step 3: Cross multiply
    11,478.70x = 17,217.58 × 3,158.11
  4. Step 4: Simplify right side
    11,478.70x = 54,375,011.57
  5. Step 5: Solve for x
    x = 54,375,011.57/11,478.70
  6. Step 6: Final answer
    x = 4,737.04

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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.