Home / 20,230.16-27,850.03-15,185.88

Finding the Fourth Proportional to 20,230.16, 27,850.03 and 15,185.88

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Solution

The fourth proportional to 20,230.16, 27,850.03 and 15,185.88 is: 20,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.16 : 27,850.03 = 15,185.88 : x
  2. Step 2: Convert to fraction form
    20,230.16/27,850.03 = 15,185.88/x
  3. Step 3: Cross multiply
    20,230.16x = 27,850.03 × 15,185.88
  4. Step 4: Simplify right side
    20,230.16x = 422,927,175.61
  5. Step 5: Solve for x
    x = 422,927,175.61/20,230.16
  6. Step 6: Final answer
    x = 20,905.78

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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.