Home / 20,011.40-30,021.12-5,971.64

Finding the Fourth Proportional to 20,011.40, 30,021.12 and 5,971.64

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Solution

The fourth proportional to 20,011.40, 30,021.12 and 5,971.64 is: 8,958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011.40 : 30,021.12 = 5,971.64 : x
  2. Step 2: Convert to fraction form
    20,011.40/30,021.12 = 5,971.64/x
  3. Step 3: Cross multiply
    20,011.40x = 30,021.12 × 5,971.64
  4. Step 4: Simplify right side
    20,011.40x = 179,275,321.04
  5. Step 5: Solve for x
    x = 179,275,321.04/20,011.40
  6. Step 6: Final answer
    x = 8,958.66

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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.