Home / 10,517.58-15,774.84-3,120.66

Finding the Fourth Proportional to 10,517.58, 15,774.84 and 3,120.66

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Solution

The fourth proportional to 10,517.58, 15,774.84 and 3,120.66 is: 4,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.58 : 15,774.84 = 3,120.66 : x
  2. Step 2: Convert to fraction form
    10,517.58/15,774.84 = 3,120.66/x
  3. Step 3: Cross multiply
    10,517.58x = 15,774.84 × 3,120.66
  4. Step 4: Simplify right side
    10,517.58x = 49,227,912.19
  5. Step 5: Solve for x
    x = 49,227,912.19/10,517.58
  6. Step 6: Final answer
    x = 4,680.54

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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.