Home / 18,228.80-27,331.88-7,122.44

Finding the Fourth Proportional to 18,228.80, 27,331.88 and 7,122.44

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Solution

The fourth proportional to 18,228.80, 27,331.88 and 7,122.44 is: 10,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228.80 : 27,331.88 = 7,122.44 : x
  2. Step 2: Convert to fraction form
    18,228.80/27,331.88 = 7,122.44/x
  3. Step 3: Cross multiply
    18,228.80x = 27,331.88 × 7,122.44
  4. Step 4: Simplify right side
    18,228.80x = 194,669,503.12
  5. Step 5: Solve for x
    x = 194,669,503.12/18,228.80
  6. Step 6: Final answer
    x = 10,679.23

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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.