Home / 18,531.71-27,800.28-5,382.38

Finding the Fourth Proportional to 18,531.71, 27,800.28 and 5,382.38

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Solution

The fourth proportional to 18,531.71, 27,800.28 and 5,382.38 is: 8,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.71 : 27,800.28 = 5,382.38 : x
  2. Step 2: Convert to fraction form
    18,531.71/27,800.28 = 5,382.38/x
  3. Step 3: Cross multiply
    18,531.71x = 27,800.28 × 5,382.38
  4. Step 4: Simplify right side
    18,531.71x = 149,631,511.88
  5. Step 5: Solve for x
    x = 149,631,511.88/18,531.71
  6. Step 6: Final answer
    x = 8,074.35

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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.