Home / 39,792.80-54,913.17-21,887.42

Finding the Fourth Proportional to 39,792.80, 54,913.17 and 21,887.42

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Solution

The fourth proportional to 39,792.80, 54,913.17 and 21,887.42 is: 30,204.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,792.80 : 54,913.17 = 21,887.42 : x
  2. Step 2: Convert to fraction form
    39,792.80/54,913.17 = 21,887.42/x
  3. Step 3: Cross multiply
    39,792.80x = 54,913.17 × 21,887.42
  4. Step 4: Simplify right side
    39,792.80x = 1,201,907,701.49
  5. Step 5: Solve for x
    x = 1,201,907,701.49/39,792.80
  6. Step 6: Final answer
    x = 30,204.15

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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.