Home / 39,440.43-54,429.10-21,536.80

Finding the Fourth Proportional to 39,440.43, 54,429.10 and 21,536.80

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Solution

The fourth proportional to 39,440.43, 54,429.10 and 21,536.80 is: 29,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,440.43 : 54,429.10 = 21,536.80 : x
  2. Step 2: Convert to fraction form
    39,440.43/54,429.10 = 21,536.80/x
  3. Step 3: Cross multiply
    39,440.43x = 54,429.10 × 21,536.80
  4. Step 4: Simplify right side
    39,440.43x = 1,172,228,450.97
  5. Step 5: Solve for x
    x = 1,172,228,450.97/39,440.43
  6. Step 6: Final answer
    x = 29,721.49

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1.5x scale

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.