Home / 10,072.75-15,109.94-3,147.25

Finding the Fourth Proportional to 10,072.75, 15,109.94 and 3,147.25

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Solution

The fourth proportional to 10,072.75, 15,109.94 and 3,147.25 is: 4,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,072.75 : 15,109.94 = 3,147.25 : x
  2. Step 2: Convert to fraction form
    10,072.75/15,109.94 = 3,147.25/x
  3. Step 3: Cross multiply
    10,072.75x = 15,109.94 × 3,147.25
  4. Step 4: Simplify right side
    10,072.75x = 47,554,742.93
  5. Step 5: Solve for x
    x = 47,554,742.93/10,072.75
  6. Step 6: Final answer
    x = 4,721.13

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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.