Home / 12,135.33-18,186.08-9,171.34

Finding the Fourth Proportional to 12,135.33, 18,186.08 and 9,171.34

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Solution

The fourth proportional to 12,135.33, 18,186.08 and 9,171.34 is: 13,744.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.33 : 18,186.08 = 9,171.34 : x
  2. Step 2: Convert to fraction form
    12,135.33/18,186.08 = 9,171.34/x
  3. Step 3: Cross multiply
    12,135.33x = 18,186.08 × 9,171.34
  4. Step 4: Simplify right side
    12,135.33x = 166,790,631.63
  5. Step 5: Solve for x
    x = 166,790,631.63/12,135.33
  6. Step 6: Final answer
    x = 13,744.22

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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.