Home / 13,172.12-18,177.26-7,203.72

Finding the Fourth Proportional to 13,172.12, 18,177.26 and 7,203.72

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Solution

The fourth proportional to 13,172.12, 18,177.26 and 7,203.72 is: 9,940.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.12 : 18,177.26 = 7,203.72 : x
  2. Step 2: Convert to fraction form
    13,172.12/18,177.26 = 7,203.72/x
  3. Step 3: Cross multiply
    13,172.12x = 18,177.26 × 7,203.72
  4. Step 4: Simplify right side
    13,172.12x = 130,943,855.39
  5. Step 5: Solve for x
    x = 130,943,855.39/13,172.12
  6. Step 6: Final answer
    x = 9,940.99

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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.