Home / 20,020.85-30,031.89-6,873.04

Finding the Fourth Proportional to 20,020.85, 30,031.89 and 6,873.04

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Solution

The fourth proportional to 20,020.85, 30,031.89 and 6,873.04 is: 10,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.85 : 30,031.89 = 6,873.04 : x
  2. Step 2: Convert to fraction form
    20,020.85/30,031.89 = 6,873.04/x
  3. Step 3: Cross multiply
    20,020.85x = 30,031.89 × 6,873.04
  4. Step 4: Simplify right side
    20,020.85x = 206,410,381.25
  5. Step 5: Solve for x
    x = 206,410,381.25/20,020.85
  6. Step 6: Final answer
    x = 10,309.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.