Home / 20,144.20-30,221.10-9,747.40

Finding the Fourth Proportional to 20,144.20, 30,221.10 and 9,747.40

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Solution

The fourth proportional to 20,144.20, 30,221.10 and 9,747.40 is: 14,623.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.20 : 30,221.10 = 9,747.40 : x
  2. Step 2: Convert to fraction form
    20,144.20/30,221.10 = 9,747.40/x
  3. Step 3: Cross multiply
    20,144.20x = 30,221.10 × 9,747.40
  4. Step 4: Simplify right side
    20,144.20x = 294,577,150.14
  5. Step 5: Solve for x
    x = 294,577,150.14/20,144.20
  6. Step 6: Final answer
    x = 14,623.42

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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.