Home / 20,280.92-30,396.26-11,489.18

Finding the Fourth Proportional to 20,280.92, 30,396.26 and 11,489.18

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Solution

The fourth proportional to 20,280.92, 30,396.26 and 11,489.18 is: 17,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.92 : 30,396.26 = 11,489.18 : x
  2. Step 2: Convert to fraction form
    20,280.92/30,396.26 = 11,489.18/x
  3. Step 3: Cross multiply
    20,280.92x = 30,396.26 × 11,489.18
  4. Step 4: Simplify right side
    20,280.92x = 349,228,102.47
  5. Step 5: Solve for x
    x = 349,228,102.47/20,280.92
  6. Step 6: Final answer
    x = 17,219.54

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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.