Home / 13,172.06-19,758.11-5,380.88

Finding the Fourth Proportional to 13,172.06, 19,758.11 and 5,380.88

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Solution

The fourth proportional to 13,172.06, 19,758.11 and 5,380.88 is: 8,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.06 : 19,758.11 = 5,380.88 : x
  2. Step 2: Convert to fraction form
    13,172.06/19,758.11 = 5,380.88/x
  3. Step 3: Cross multiply
    13,172.06x = 19,758.11 × 5,380.88
  4. Step 4: Simplify right side
    13,172.06x = 106,315,893.24
  5. Step 5: Solve for x
    x = 106,315,893.24/13,172.06
  6. Step 6: Final answer
    x = 8,071.32

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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.