Home / 39,982.08-55,176.12-22,078.21

Finding the Fourth Proportional to 39,982.08, 55,176.12 and 22,078.21

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Solution

The fourth proportional to 39,982.08, 55,176.12 and 22,078.21 is: 30,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,982.08 : 55,176.12 = 22,078.21 : x
  2. Step 2: Convert to fraction form
    39,982.08/55,176.12 = 22,078.21/x
  3. Step 3: Cross multiply
    39,982.08x = 55,176.12 × 22,078.21
  4. Step 4: Simplify right side
    39,982.08x = 1,218,189,964.35
  5. Step 5: Solve for x
    x = 1,218,189,964.35/39,982.08
  6. Step 6: Final answer
    x = 30,468.40

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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.