Home / 20,109.03-27,751.20-12,149.72

Finding the Fourth Proportional to 20,109.03, 27,751.20 and 12,149.72

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Solution

The fourth proportional to 20,109.03, 27,751.20 and 12,149.72 is: 16,767.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.03 : 27,751.20 = 12,149.72 : x
  2. Step 2: Convert to fraction form
    20,109.03/27,751.20 = 12,149.72/x
  3. Step 3: Cross multiply
    20,109.03x = 27,751.20 × 12,149.72
  4. Step 4: Simplify right side
    20,109.03x = 337,169,309.66
  5. Step 5: Solve for x
    x = 337,169,309.66/20,109.03
  6. Step 6: Final answer
    x = 16,767.06

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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.