Home / 20,197.50-27,872.55-11,815.62

Finding the Fourth Proportional to 20,197.50, 27,872.55 and 11,815.62

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Solution

The fourth proportional to 20,197.50, 27,872.55 and 11,815.62 is: 16,305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,197.50 : 27,872.55 = 11,815.62 : x
  2. Step 2: Convert to fraction form
    20,197.50/27,872.55 = 11,815.62/x
  3. Step 3: Cross multiply
    20,197.50x = 27,872.55 × 11,815.62
  4. Step 4: Simplify right side
    20,197.50x = 329,331,459.23
  5. Step 5: Solve for x
    x = 329,331,459.23/20,197.50
  6. Step 6: Final answer
    x = 16,305.56

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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.