Home / 12,144.14-18,206.38-5,119.62

Finding the Fourth Proportional to 12,144.14, 18,206.38 and 5,119.62

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Solution

The fourth proportional to 12,144.14, 18,206.38 and 5,119.62 is: 7,675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.14 : 18,206.38 = 5,119.62 : x
  2. Step 2: Convert to fraction form
    12,144.14/18,206.38 = 5,119.62/x
  3. Step 3: Cross multiply
    12,144.14x = 18,206.38 × 5,119.62
  4. Step 4: Simplify right side
    12,144.14x = 93,209,747.18
  5. Step 5: Solve for x
    x = 93,209,747.18/12,144.14
  6. Step 6: Final answer
    x = 7,675.29

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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.