Home / 13,515.76-20,245.39-10,868.95

Finding the Fourth Proportional to 13,515.76, 20,245.39 and 10,868.95

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Solution

The fourth proportional to 13,515.76, 20,245.39 and 10,868.95 is: 16,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.76 : 20,245.39 = 10,868.95 : x
  2. Step 2: Convert to fraction form
    13,515.76/20,245.39 = 10,868.95/x
  3. Step 3: Cross multiply
    13,515.76x = 20,245.39 × 10,868.95
  4. Step 4: Simplify right side
    13,515.76x = 220,046,131.64
  5. Step 5: Solve for x
    x = 220,046,131.64/13,515.76
  6. Step 6: Final answer
    x = 16,280.71

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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.