Home / 13,172.14-19,758.07-3,311.20

Finding the Fourth Proportional to 13,172.14, 19,758.07 and 3,311.20

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Solution

The fourth proportional to 13,172.14, 19,758.07 and 3,311.20 is: 4,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.14 : 19,758.07 = 3,311.20 : x
  2. Step 2: Convert to fraction form
    13,172.14/19,758.07 = 3,311.20/x
  3. Step 3: Cross multiply
    13,172.14x = 19,758.07 × 3,311.20
  4. Step 4: Simplify right side
    13,172.14x = 65,422,921.38
  5. Step 5: Solve for x
    x = 65,422,921.38/13,172.14
  6. Step 6: Final answer
    x = 4,966.76

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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.