Home / 39,863.28-55,011.39-21,958.35

Finding the Fourth Proportional to 39,863.28, 55,011.39 and 21,958.35

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Solution

The fourth proportional to 39,863.28, 55,011.39 and 21,958.35 is: 30,302.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.28 : 55,011.39 = 21,958.35 : x
  2. Step 2: Convert to fraction form
    39,863.28/55,011.39 = 21,958.35/x
  3. Step 3: Cross multiply
    39,863.28x = 55,011.39 × 21,958.35
  4. Step 4: Simplify right side
    39,863.28x = 1,207,959,355.61
  5. Step 5: Solve for x
    x = 1,207,959,355.61/39,863.28
  6. Step 6: Final answer
    x = 30,302.56

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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.