Home / 10,111.84-15,171.36-5,183.80

Finding the Fourth Proportional to 10,111.84, 15,171.36 and 5,183.80

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Solution

The fourth proportional to 10,111.84, 15,171.36 and 5,183.80 is: 7,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,111.84 : 15,171.36 = 5,183.80 : x
  2. Step 2: Convert to fraction form
    10,111.84/15,171.36 = 5,183.80/x
  3. Step 3: Cross multiply
    10,111.84x = 15,171.36 × 5,183.80
  4. Step 4: Simplify right side
    10,111.84x = 78,645,295.97
  5. Step 5: Solve for x
    x = 78,645,295.97/10,111.84
  6. Step 6: Final answer
    x = 7,777.55

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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.