Home / 20,635.49-28,471.20-11,682.80

Finding the Fourth Proportional to 20,635.49, 28,471.20 and 11,682.80

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Solution

The fourth proportional to 20,635.49, 28,471.20 and 11,682.80 is: 16,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.49 : 28,471.20 = 11,682.80 : x
  2. Step 2: Convert to fraction form
    20,635.49/28,471.20 = 11,682.80/x
  3. Step 3: Cross multiply
    20,635.49x = 28,471.20 × 11,682.80
  4. Step 4: Simplify right side
    20,635.49x = 332,623,255.96
  5. Step 5: Solve for x
    x = 332,623,255.96/20,635.49
  6. Step 6: Final answer
    x = 16,118.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.