Home / 12,155.52-18,233.26-2,921.52

Finding the Fourth Proportional to 12,155.52, 18,233.26 and 2,921.52

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Solution

The fourth proportional to 12,155.52, 18,233.26 and 2,921.52 is: 4,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.52 : 18,233.26 = 2,921.52 : x
  2. Step 2: Convert to fraction form
    12,155.52/18,233.26 = 2,921.52/x
  3. Step 3: Cross multiply
    12,155.52x = 18,233.26 × 2,921.52
  4. Step 4: Simplify right side
    12,155.52x = 53,268,833.76
  5. Step 5: Solve for x
    x = 53,268,833.76/12,155.52
  6. Step 6: Final answer
    x = 4,382.28

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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.