Home / 20,177.72-27,833.88-12,109.29

Finding the Fourth Proportional to 20,177.72, 27,833.88 and 12,109.29

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Solution

The fourth proportional to 20,177.72, 27,833.88 and 12,109.29 is: 16,703.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.72 : 27,833.88 = 12,109.29 : x
  2. Step 2: Convert to fraction form
    20,177.72/27,833.88 = 12,109.29/x
  3. Step 3: Cross multiply
    20,177.72x = 27,833.88 × 12,109.29
  4. Step 4: Simplify right side
    20,177.72x = 337,048,524.75
  5. Step 5: Solve for x
    x = 337,048,524.75/20,177.72
  6. Step 6: Final answer
    x = 16,703.99

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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.