Home / 39,792.78-54,915.48-21,889.17

Finding the Fourth Proportional to 39,792.78, 54,915.48 and 21,889.17

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Solution

The fourth proportional to 39,792.78, 54,915.48 and 21,889.17 is: 30,207.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,792.78 : 54,915.48 = 21,889.17 : x
  2. Step 2: Convert to fraction form
    39,792.78/54,915.48 = 21,889.17/x
  3. Step 3: Cross multiply
    39,792.78x = 54,915.48 × 21,889.17
  4. Step 4: Simplify right side
    39,792.78x = 1,202,054,277.35
  5. Step 5: Solve for x
    x = 1,202,054,277.35/39,792.78
  6. Step 6: Final answer
    x = 30,207.85

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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.