Home / 13,171.21-19,756.83-5,380.02

Finding the Fourth Proportional to 13,171.21, 19,756.83 and 5,380.02

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Solution

The fourth proportional to 13,171.21, 19,756.83 and 5,380.02 is: 8,070.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.21 : 19,756.83 = 5,380.02 : x
  2. Step 2: Convert to fraction form
    13,171.21/19,756.83 = 5,380.02/x
  3. Step 3: Cross multiply
    13,171.21x = 19,756.83 × 5,380.02
  4. Step 4: Simplify right side
    13,171.21x = 106,292,113.64
  5. Step 5: Solve for x
    x = 106,292,113.64/13,171.21
  6. Step 6: Final answer
    x = 8,070.04

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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.