Home / 8,921.71-13,382.16-4,243.96

Finding the Fourth Proportional to 8,921.71, 13,382.16 and 4,243.96

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Solution

The fourth proportional to 8,921.71, 13,382.16 and 4,243.96 is: 6,365.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.71 : 13,382.16 = 4,243.96 : x
  2. Step 2: Convert to fraction form
    8,921.71/13,382.16 = 4,243.96/x
  3. Step 3: Cross multiply
    8,921.71x = 13,382.16 × 4,243.96
  4. Step 4: Simplify right side
    8,921.71x = 56,793,351.75
  5. Step 5: Solve for x
    x = 56,793,351.75/8,921.71
  6. Step 6: Final answer
    x = 6,365.75

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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.