Home / 20,270.12-27,974.00-11,317.60

Finding the Fourth Proportional to 20,270.12, 27,974.00 and 11,317.60

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Solution

The fourth proportional to 20,270.12, 27,974.00 and 11,317.60 is: 15,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.12 : 27,974.00 = 11,317.60 : x
  2. Step 2: Convert to fraction form
    20,270.12/27,974.00 = 11,317.60/x
  3. Step 3: Cross multiply
    20,270.12x = 27,974.00 × 11,317.60
  4. Step 4: Simplify right side
    20,270.12x = 316,598,345.94
  5. Step 5: Solve for x
    x = 316,598,345.94/20,270.12
  6. Step 6: Final answer
    x = 15,618.97

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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.