Home / 12,189.96-18,163.56-10,881.36

Finding the Fourth Proportional to 12,189.96, 18,163.56 and 10,881.36

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Solution

The fourth proportional to 12,189.96, 18,163.56 and 10,881.36 is: 16,213.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.96 : 18,163.56 = 10,881.36 : x
  2. Step 2: Convert to fraction form
    12,189.96/18,163.56 = 10,881.36/x
  3. Step 3: Cross multiply
    12,189.96x = 18,163.56 × 10,881.36
  4. Step 4: Simplify right side
    12,189.96x = 197,644,235.24
  5. Step 5: Solve for x
    x = 197,644,235.24/12,189.96
  6. Step 6: Final answer
    x = 16,213.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.