Home / 20,530.92-30,771.48-9,422.16

Finding the Fourth Proportional to 20,530.92, 30,771.48 and 9,422.16

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Solution

The fourth proportional to 20,530.92, 30,771.48 and 9,422.16 is: 14,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.92 : 30,771.48 = 9,422.16 : x
  2. Step 2: Convert to fraction form
    20,530.92/30,771.48 = 9,422.16/x
  3. Step 3: Cross multiply
    20,530.92x = 30,771.48 × 9,422.16
  4. Step 4: Simplify right side
    20,530.92x = 289,933,808.00
  5. Step 5: Solve for x
    x = 289,933,808.00/20,530.92
  6. Step 6: Final answer
    x = 14,121.81

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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.