Home / 20,105.88-30,154.23-7,627.29

Finding the Fourth Proportional to 20,105.88, 30,154.23 and 7,627.29

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Solution

The fourth proportional to 20,105.88, 30,154.23 and 7,627.29 is: 11,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.88 : 30,154.23 = 7,627.29 : x
  2. Step 2: Convert to fraction form
    20,105.88/30,154.23 = 7,627.29/x
  3. Step 3: Cross multiply
    20,105.88x = 30,154.23 × 7,627.29
  4. Step 4: Simplify right side
    20,105.88x = 229,995,056.94
  5. Step 5: Solve for x
    x = 229,995,056.94/20,105.88
  6. Step 6: Final answer
    x = 11,439.19

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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.