Home / 12,160.66-18,240.04-7,481.30

Finding the Fourth Proportional to 12,160.66, 18,240.04 and 7,481.30

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Solution

The fourth proportional to 12,160.66, 18,240.04 and 7,481.30 is: 11,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.66 : 18,240.04 = 7,481.30 : x
  2. Step 2: Convert to fraction form
    12,160.66/18,240.04 = 7,481.30/x
  3. Step 3: Cross multiply
    12,160.66x = 18,240.04 × 7,481.30
  4. Step 4: Simplify right side
    12,160.66x = 136,459,211.25
  5. Step 5: Solve for x
    x = 136,459,211.25/12,160.66
  6. Step 6: Final answer
    x = 11,221.37

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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.