Home / 13,851.72-20,786.28-7,282.56

Finding the Fourth Proportional to 13,851.72, 20,786.28 and 7,282.56

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Solution

The fourth proportional to 13,851.72, 20,786.28 and 7,282.56 is: 10,928.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.72 : 20,786.28 = 7,282.56 : x
  2. Step 2: Convert to fraction form
    13,851.72/20,786.28 = 7,282.56/x
  3. Step 3: Cross multiply
    13,851.72x = 20,786.28 × 7,282.56
  4. Step 4: Simplify right side
    13,851.72x = 151,377,331.28
  5. Step 5: Solve for x
    x = 151,377,331.28/13,851.72
  6. Step 6: Final answer
    x = 10,928.41

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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.