Home / 12,850.75-19,278.75-5,455.18

Finding the Fourth Proportional to 12,850.75, 19,278.75 and 5,455.18

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Solution

The fourth proportional to 12,850.75, 19,278.75 and 5,455.18 is: 8,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,850.75 : 19,278.75 = 5,455.18 : x
  2. Step 2: Convert to fraction form
    12,850.75/19,278.75 = 5,455.18/x
  3. Step 3: Cross multiply
    12,850.75x = 19,278.75 × 5,455.18
  4. Step 4: Simplify right side
    12,850.75x = 105,168,955.03
  5. Step 5: Solve for x
    x = 105,168,955.03/12,850.75
  6. Step 6: Final answer
    x = 8,183.88

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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.