Home / 39,863.30-55,011.76-21,958.75

Finding the Fourth Proportional to 39,863.30, 55,011.76 and 21,958.75

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Solution

The fourth proportional to 39,863.30, 55,011.76 and 21,958.75 is: 30,303.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,863.30 : 55,011.76 = 21,958.75 : x
  2. Step 2: Convert to fraction form
    39,863.30/55,011.76 = 21,958.75/x
  3. Step 3: Cross multiply
    39,863.30x = 55,011.76 × 21,958.75
  4. Step 4: Simplify right side
    39,863.30x = 1,207,989,375.11
  5. Step 5: Solve for x
    x = 1,207,989,375.11/39,863.30
  6. Step 6: Final answer
    x = 30,303.30

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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.