Home / 11,517.34-15,884.13-9,278.50

Finding the Fourth Proportional to 11,517.34, 15,884.13 and 9,278.50

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Solution

The fourth proportional to 11,517.34, 15,884.13 and 9,278.50 is: 12,796.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517.34 : 15,884.13 = 9,278.50 : x
  2. Step 2: Convert to fraction form
    11,517.34/15,884.13 = 9,278.50/x
  3. Step 3: Cross multiply
    11,517.34x = 15,884.13 × 9,278.50
  4. Step 4: Simplify right side
    11,517.34x = 147,380,900.21
  5. Step 5: Solve for x
    x = 147,380,900.21/11,517.34
  6. Step 6: Final answer
    x = 12,796.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.