Home / 10,515.20-15,772.60-2,723.84

Finding the Fourth Proportional to 10,515.20, 15,772.60 and 2,723.84

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Solution

The fourth proportional to 10,515.20, 15,772.60 and 2,723.84 is: 4,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.20 : 15,772.60 = 2,723.84 : x
  2. Step 2: Convert to fraction form
    10,515.20/15,772.60 = 2,723.84/x
  3. Step 3: Cross multiply
    10,515.20x = 15,772.60 × 2,723.84
  4. Step 4: Simplify right side
    10,515.20x = 42,962,038.78
  5. Step 5: Solve for x
    x = 42,962,038.78/10,515.20
  6. Step 6: Final answer
    x = 4,085.71

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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.