Home / 10,256.49-15,378.17-4,331.78

Finding the Fourth Proportional to 10,256.49, 15,378.17 and 4,331.78

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Solution

The fourth proportional to 10,256.49, 15,378.17 and 4,331.78 is: 6,494.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,256.49 : 15,378.17 = 4,331.78 : x
  2. Step 2: Convert to fraction form
    10,256.49/15,378.17 = 4,331.78/x
  3. Step 3: Cross multiply
    10,256.49x = 15,378.17 × 4,331.78
  4. Step 4: Simplify right side
    10,256.49x = 66,614,766.94
  5. Step 5: Solve for x
    x = 66,614,766.94/10,256.49
  6. Step 6: Final answer
    x = 6,494.89

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1.5x scale

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.