Home / 15,103.19-20,842.29-8,388.86

Finding the Fourth Proportional to 15,103.19, 20,842.29 and 8,388.86

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Solution

The fourth proportional to 15,103.19, 20,842.29 and 8,388.86 is: 11,576.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.19 : 20,842.29 = 8,388.86 : x
  2. Step 2: Convert to fraction form
    15,103.19/20,842.29 = 8,388.86/x
  3. Step 3: Cross multiply
    15,103.19x = 20,842.29 × 8,388.86
  4. Step 4: Simplify right side
    15,103.19x = 174,842,948.68
  5. Step 5: Solve for x
    x = 174,842,948.68/15,103.19
  6. Step 6: Final answer
    x = 11,576.56

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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.