Home / 13,172.05-18,177.24-7,203.57

Finding the Fourth Proportional to 13,172.05, 18,177.24 and 7,203.57

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Solution

The fourth proportional to 13,172.05, 18,177.24 and 7,203.57 is: 9,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.05 : 18,177.24 = 7,203.57 : x
  2. Step 2: Convert to fraction form
    13,172.05/18,177.24 = 7,203.57/x
  3. Step 3: Cross multiply
    13,172.05x = 18,177.24 × 7,203.57
  4. Step 4: Simplify right side
    13,172.05x = 130,941,020.75
  5. Step 5: Solve for x
    x = 130,941,020.75/13,172.05
  6. Step 6: Final answer
    x = 9,940.82

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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.