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Finding the Fourth Proportional to 12,998.07, 17,945.55 and 9,229.14

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Solution

The fourth proportional to 12,998.07, 17,945.55 and 9,229.14 is: 12,742.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.07 : 17,945.55 = 9,229.14 : x
  2. Step 2: Convert to fraction form
    12,998.07/17,945.55 = 9,229.14/x
  3. Step 3: Cross multiply
    12,998.07x = 17,945.55 × 9,229.14
  4. Step 4: Simplify right side
    12,998.07x = 165,621,993.33
  5. Step 5: Solve for x
    x = 165,621,993.33/12,998.07
  6. Step 6: Final answer
    x = 12,742.05

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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.