Home / 10,280.25-15,420.33-2,489.07

Finding the Fourth Proportional to 10,280.25, 15,420.33 and 2,489.07

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Solution

The fourth proportional to 10,280.25, 15,420.33 and 2,489.07 is: 3,733.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.25 : 15,420.33 = 2,489.07 : x
  2. Step 2: Convert to fraction form
    10,280.25/15,420.33 = 2,489.07/x
  3. Step 3: Cross multiply
    10,280.25x = 15,420.33 × 2,489.07
  4. Step 4: Simplify right side
    10,280.25x = 38,382,222.97
  5. Step 5: Solve for x
    x = 38,382,222.97/10,280.25
  6. Step 6: Final answer
    x = 3,733.59

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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.