Home / 12,090.14-18,138.72-4,299.56

Finding the Fourth Proportional to 12,090.14, 18,138.72 and 4,299.56

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Solution

The fourth proportional to 12,090.14, 18,138.72 and 4,299.56 is: 6,450.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.14 : 18,138.72 = 4,299.56 : x
  2. Step 2: Convert to fraction form
    12,090.14/18,138.72 = 4,299.56/x
  3. Step 3: Cross multiply
    12,090.14x = 18,138.72 × 4,299.56
  4. Step 4: Simplify right side
    12,090.14x = 77,988,514.96
  5. Step 5: Solve for x
    x = 77,988,514.96/12,090.14
  6. Step 6: Final answer
    x = 6,450.59

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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.