Home / 12,344.78-18,517.42-5,769.20

Finding the Fourth Proportional to 12,344.78, 18,517.42 and 5,769.20

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Solution

The fourth proportional to 12,344.78, 18,517.42 and 5,769.20 is: 8,653.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,344.78 : 18,517.42 = 5,769.20 : x
  2. Step 2: Convert to fraction form
    12,344.78/18,517.42 = 5,769.20/x
  3. Step 3: Cross multiply
    12,344.78x = 18,517.42 × 5,769.20
  4. Step 4: Simplify right side
    12,344.78x = 106,830,699.46
  5. Step 5: Solve for x
    x = 106,830,699.46/12,344.78
  6. Step 6: Final answer
    x = 8,653.92

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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.