Home / 28,138.36-42,196.95-11,489.48

Finding the Fourth Proportional to 28,138.36, 42,196.95 and 11,489.48

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Solution

The fourth proportional to 28,138.36, 42,196.95 and 11,489.48 is: 17,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.36 : 42,196.95 = 11,489.48 : x
  2. Step 2: Convert to fraction form
    28,138.36/42,196.95 = 11,489.48/x
  3. Step 3: Cross multiply
    28,138.36x = 42,196.95 × 11,489.48
  4. Step 4: Simplify right side
    28,138.36x = 484,821,138.36
  5. Step 5: Solve for x
    x = 484,821,138.36/28,138.36
  6. Step 6: Final answer
    x = 17,229.90

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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.