Home / 13,147.57-18,144.21-7,179.49

Finding the Fourth Proportional to 13,147.57, 18,144.21 and 7,179.49

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Solution

The fourth proportional to 13,147.57, 18,144.21 and 7,179.49 is: 9,908.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.57 : 18,144.21 = 7,179.49 : x
  2. Step 2: Convert to fraction form
    13,147.57/18,144.21 = 7,179.49/x
  3. Step 3: Cross multiply
    13,147.57x = 18,144.21 × 7,179.49
  4. Step 4: Simplify right side
    13,147.57x = 130,266,174.25
  5. Step 5: Solve for x
    x = 130,266,174.25/13,147.57
  6. Step 6: Final answer
    x = 9,908.00

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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.