Home / 39,629.34-54,689.24-21,724.22

Finding the Fourth Proportional to 39,629.34, 54,689.24 and 21,724.22

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Solution

The fourth proportional to 39,629.34, 54,689.24 and 21,724.22 is: 29,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,629.34 : 54,689.24 = 21,724.22 : x
  2. Step 2: Convert to fraction form
    39,629.34/54,689.24 = 21,724.22/x
  3. Step 3: Cross multiply
    39,629.34x = 54,689.24 × 21,724.22
  4. Step 4: Simplify right side
    39,629.34x = 1,188,081,081.39
  5. Step 5: Solve for x
    x = 1,188,081,081.39/39,629.34
  6. Step 6: Final answer
    x = 29,979.84

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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.