Home / 19,168.05-28,722.17-12,133.20

Finding the Fourth Proportional to 19,168.05, 28,722.17 and 12,133.20

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Solution

The fourth proportional to 19,168.05, 28,722.17 and 12,133.20 is: 18,180.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.05 : 28,722.17 = 12,133.20 : x
  2. Step 2: Convert to fraction form
    19,168.05/28,722.17 = 12,133.20/x
  3. Step 3: Cross multiply
    19,168.05x = 28,722.17 × 12,133.20
  4. Step 4: Simplify right side
    19,168.05x = 348,491,833.04
  5. Step 5: Solve for x
    x = 348,491,833.04/19,168.05
  6. Step 6: Final answer
    x = 18,180.87

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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.