Home / 10,998.55-15,165.97-8,171.17

Finding the Fourth Proportional to 10,998.55, 15,165.97 and 8,171.17

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Solution

The fourth proportional to 10,998.55, 15,165.97 and 8,171.17 is: 11,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.55 : 15,165.97 = 8,171.17 : x
  2. Step 2: Convert to fraction form
    10,998.55/15,165.97 = 8,171.17/x
  3. Step 3: Cross multiply
    10,998.55x = 15,165.97 × 8,171.17
  4. Step 4: Simplify right side
    10,998.55x = 123,923,678.23
  5. Step 5: Solve for x
    x = 123,923,678.23/10,998.55
  6. Step 6: Final answer
    x = 11,267.27

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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.