Home / 13,028.24-17,979.24-7,439.60

Finding the Fourth Proportional to 13,028.24, 17,979.24 and 7,439.60

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Solution

The fourth proportional to 13,028.24, 17,979.24 and 7,439.60 is: 10,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.24 : 17,979.24 = 7,439.60 : x
  2. Step 2: Convert to fraction form
    13,028.24/17,979.24 = 7,439.60/x
  3. Step 3: Cross multiply
    13,028.24x = 17,979.24 × 7,439.60
  4. Step 4: Simplify right side
    13,028.24x = 133,758,353.90
  5. Step 5: Solve for x
    x = 133,758,353.90/13,028.24
  6. Step 6: Final answer
    x = 10,266.80

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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.