Home / 40,020.72-55,229.04-22,115.40

Finding the Fourth Proportional to 40,020.72, 55,229.04 and 22,115.40

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Solution

The fourth proportional to 40,020.72, 55,229.04 and 22,115.40 is: 30,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,020.72 : 55,229.04 = 22,115.40 : x
  2. Step 2: Convert to fraction form
    40,020.72/55,229.04 = 22,115.40/x
  3. Step 3: Cross multiply
    40,020.72x = 55,229.04 × 22,115.40
  4. Step 4: Simplify right side
    40,020.72x = 1,221,412,311.22
  5. Step 5: Solve for x
    x = 1,221,412,311.22/40,020.72
  6. Step 6: Final answer
    x = 30,519.50

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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.