Home / 13,922.76-20,879.28-6,129.48

Finding the Fourth Proportional to 13,922.76, 20,879.28 and 6,129.48

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Solution

The fourth proportional to 13,922.76, 20,879.28 and 6,129.48 is: 9,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.76 : 20,879.28 = 6,129.48 : x
  2. Step 2: Convert to fraction form
    13,922.76/20,879.28 = 6,129.48/x
  3. Step 3: Cross multiply
    13,922.76x = 20,879.28 × 6,129.48
  4. Step 4: Simplify right side
    13,922.76x = 127,979,129.17
  5. Step 5: Solve for x
    x = 127,979,129.17/13,922.76
  6. Step 6: Final answer
    x = 9,192.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.