Home / 20,239.24-27,930.31-11,287.32

Finding the Fourth Proportional to 20,239.24, 27,930.31 and 11,287.32

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Solution

The fourth proportional to 20,239.24, 27,930.31 and 11,287.32 is: 15,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.24 : 27,930.31 = 11,287.32 : x
  2. Step 2: Convert to fraction form
    20,239.24/27,930.31 = 11,287.32/x
  3. Step 3: Cross multiply
    20,239.24x = 27,930.31 × 11,287.32
  4. Step 4: Simplify right side
    20,239.24x = 315,258,346.67
  5. Step 5: Solve for x
    x = 315,258,346.67/20,239.24
  6. Step 6: Final answer
    x = 15,576.59

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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.