Home / 20,213.61-30,324.48-8,526.78

Finding the Fourth Proportional to 20,213.61, 30,324.48 and 8,526.78

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Solution

The fourth proportional to 20,213.61, 30,324.48 and 8,526.78 is: 12,791.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.61 : 30,324.48 = 8,526.78 : x
  2. Step 2: Convert to fraction form
    20,213.61/30,324.48 = 8,526.78/x
  3. Step 3: Cross multiply
    20,213.61x = 30,324.48 × 8,526.78
  4. Step 4: Simplify right side
    20,213.61x = 258,570,169.57
  5. Step 5: Solve for x
    x = 258,570,169.57/20,213.61
  6. Step 6: Final answer
    x = 12,791.88

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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.