Home / 11,121.80-16,682.70-9,372.20

Finding the Fourth Proportional to 11,121.80, 16,682.70 and 9,372.20

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Solution

The fourth proportional to 11,121.80, 16,682.70 and 9,372.20 is: 14,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.80 : 16,682.70 = 9,372.20 : x
  2. Step 2: Convert to fraction form
    11,121.80/16,682.70 = 9,372.20/x
  3. Step 3: Cross multiply
    11,121.80x = 16,682.70 × 9,372.20
  4. Step 4: Simplify right side
    11,121.80x = 156,353,600.94
  5. Step 5: Solve for x
    x = 156,353,600.94/11,121.80
  6. Step 6: Final answer
    x = 14,058.30

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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.