Home / 12,102.84-18,147.78-5,173.56

Finding the Fourth Proportional to 12,102.84, 18,147.78 and 5,173.56

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Solution

The fourth proportional to 12,102.84, 18,147.78 and 5,173.56 is: 7,757.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.84 : 18,147.78 = 5,173.56 : x
  2. Step 2: Convert to fraction form
    12,102.84/18,147.78 = 5,173.56/x
  3. Step 3: Cross multiply
    12,102.84x = 18,147.78 × 5,173.56
  4. Step 4: Simplify right side
    12,102.84x = 93,888,628.70
  5. Step 5: Solve for x
    x = 93,888,628.70/12,102.84
  6. Step 6: Final answer
    x = 7,757.57

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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.