Home / 20,107.10-27,750.20-11,611.29

Finding the Fourth Proportional to 20,107.10, 27,750.20 and 11,611.29

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Solution

The fourth proportional to 20,107.10, 27,750.20 and 11,611.29 is: 16,024.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.10 : 27,750.20 = 11,611.29 : x
  2. Step 2: Convert to fraction form
    20,107.10/27,750.20 = 11,611.29/x
  3. Step 3: Cross multiply
    20,107.10x = 27,750.20 × 11,611.29
  4. Step 4: Simplify right side
    20,107.10x = 322,215,561.70
  5. Step 5: Solve for x
    x = 322,215,561.70/20,107.10
  6. Step 6: Final answer
    x = 16,024.96

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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.