Home / 22,128.56-33,193.20-8,990.56

Finding the Fourth Proportional to 22,128.56, 33,193.20 and 8,990.56

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Solution

The fourth proportional to 22,128.56, 33,193.20 and 8,990.56 is: 13,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,128.56 : 33,193.20 = 8,990.56 : x
  2. Step 2: Convert to fraction form
    22,128.56/33,193.20 = 8,990.56/x
  3. Step 3: Cross multiply
    22,128.56x = 33,193.20 × 8,990.56
  4. Step 4: Simplify right side
    22,128.56x = 298,425,456.19
  5. Step 5: Solve for x
    x = 298,425,456.19/22,128.56
  6. Step 6: Final answer
    x = 13,485.99

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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.