Home / 20,792.78-28,694-11,232.66

Finding the Fourth Proportional to 20,792.78, 28,694 and 11,232.66

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Solution

The fourth proportional to 20,792.78, 28,694 and 11,232.66 is: 15,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.78 : 28,694 = 11,232.66 : x
  2. Step 2: Convert to fraction form
    20,792.78/28,694 = 11,232.66/x
  3. Step 3: Cross multiply
    20,792.78x = 28,694 × 11,232.66
  4. Step 4: Simplify right side
    20,792.78x = 322,309,946.04
  5. Step 5: Solve for x
    x = 322,309,946.04/20,792.78
  6. Step 6: Final answer
    x = 15,501.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.