Home / 39,743.21-54,842.91-21,838.97

Finding the Fourth Proportional to 39,743.21, 54,842.91 and 21,838.97

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Solution

The fourth proportional to 39,743.21, 54,842.91 and 21,838.97 is: 30,136.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.21 : 54,842.91 = 21,838.97 : x
  2. Step 2: Convert to fraction form
    39,743.21/54,842.91 = 21,838.97/x
  3. Step 3: Cross multiply
    39,743.21x = 54,842.91 × 21,838.97
  4. Step 4: Simplify right side
    39,743.21x = 1,197,712,666.20
  5. Step 5: Solve for x
    x = 1,197,712,666.20/39,743.21
  6. Step 6: Final answer
    x = 30,136.28

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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.