Home / 17,154.70-23,685.15-13,168.78

Finding the Fourth Proportional to 17,154.70, 23,685.15 and 13,168.78

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Solution

The fourth proportional to 17,154.70, 23,685.15 and 13,168.78 is: 18,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,154.70 : 23,685.15 = 13,168.78 : x
  2. Step 2: Convert to fraction form
    17,154.70/23,685.15 = 13,168.78/x
  3. Step 3: Cross multiply
    17,154.70x = 23,685.15 × 13,168.78
  4. Step 4: Simplify right side
    17,154.70x = 311,904,529.62
  5. Step 5: Solve for x
    x = 311,904,529.62/17,154.70
  6. Step 6: Final answer
    x = 18,181.87

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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.