Home / 10,280.89-15,421.32-2,489.68

Finding the Fourth Proportional to 10,280.89, 15,421.32 and 2,489.68

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Solution

The fourth proportional to 10,280.89, 15,421.32 and 2,489.68 is: 3,734.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.89 : 15,421.32 = 2,489.68 : x
  2. Step 2: Convert to fraction form
    10,280.89/15,421.32 = 2,489.68/x
  3. Step 3: Cross multiply
    10,280.89x = 15,421.32 × 2,489.68
  4. Step 4: Simplify right side
    10,280.89x = 38,394,151.98
  5. Step 5: Solve for x
    x = 38,394,151.98/10,280.89
  6. Step 6: Final answer
    x = 3,734.52

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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.