Home / 18,722.28-28,063.75-7,473.21

Finding the Fourth Proportional to 18,722.28, 28,063.75 and 7,473.21

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Solution

The fourth proportional to 18,722.28, 28,063.75 and 7,473.21 is: 11,201.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.28 : 28,063.75 = 7,473.21 : x
  2. Step 2: Convert to fraction form
    18,722.28/28,063.75 = 7,473.21/x
  3. Step 3: Cross multiply
    18,722.28x = 28,063.75 × 7,473.21
  4. Step 4: Simplify right side
    18,722.28x = 209,726,297.14
  5. Step 5: Solve for x
    x = 209,726,297.14/18,722.28
  6. Step 6: Final answer
    x = 11,201.96

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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.