Home / 39,743.69-54,846.05-21,838.28

Finding the Fourth Proportional to 39,743.69, 54,846.05 and 21,838.28

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Solution

The fourth proportional to 39,743.69, 54,846.05 and 21,838.28 is: 30,136.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.69 : 54,846.05 = 21,838.28 : x
  2. Step 2: Convert to fraction form
    39,743.69/54,846.05 = 21,838.28/x
  3. Step 3: Cross multiply
    39,743.69x = 54,846.05 × 21,838.28
  4. Step 4: Simplify right side
    39,743.69x = 1,197,743,013.37
  5. Step 5: Solve for x
    x = 1,197,743,013.37/39,743.69
  6. Step 6: Final answer
    x = 30,136.69

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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.