Home / 39,743.79-54,847.78-21,839.44

Finding the Fourth Proportional to 39,743.79, 54,847.78 and 21,839.44

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Solution

The fourth proportional to 39,743.79, 54,847.78 and 21,839.44 is: 30,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,743.79 : 54,847.78 = 21,839.44 : x
  2. Step 2: Convert to fraction form
    39,743.79/54,847.78 = 21,839.44/x
  3. Step 3: Cross multiply
    39,743.79x = 54,847.78 × 21,839.44
  4. Step 4: Simplify right side
    39,743.79x = 1,197,844,800.44
  5. Step 5: Solve for x
    x = 1,197,844,800.44/39,743.79
  6. Step 6: Final answer
    x = 30,139.17

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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.