Home / 39,743.28-54,845.54-21,838.22

Finding the Fourth Proportional to 39,743.28, 54,845.54 and 21,838.22

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Solution

The fourth proportional to 39,743.28, 54,845.54 and 21,838.22 is: 30,136.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.28 : 54,845.54 = 21,838.22 : x
  2. Step 2: Convert to fraction form
    39,743.28/54,845.54 = 21,838.22/x
  3. Step 3: Cross multiply
    39,743.28x = 54,845.54 × 21,838.22
  4. Step 4: Simplify right side
    39,743.28x = 1,197,728,968.54
  5. Step 5: Solve for x
    x = 1,197,728,968.54/39,743.28
  6. Step 6: Final answer
    x = 30,136.64

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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.