Home / 12,144.37-18,193.20-7,450.69

Finding the Fourth Proportional to 12,144.37, 18,193.20 and 7,450.69

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Solution

The fourth proportional to 12,144.37, 18,193.20 and 7,450.69 is: 11,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.37 : 18,193.20 = 7,450.69 : x
  2. Step 2: Convert to fraction form
    12,144.37/18,193.20 = 7,450.69/x
  3. Step 3: Cross multiply
    12,144.37x = 18,193.20 × 7,450.69
  4. Step 4: Simplify right side
    12,144.37x = 135,551,802.34
  5. Step 5: Solve for x
    x = 135,551,802.34/12,144.37
  6. Step 6: Final answer
    x = 11,161.70

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Double scale
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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.