Home / 11,331.56-16,920.96-9,255.64

Finding the Fourth Proportional to 11,331.56, 16,920.96 and 9,255.64

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Solution

The fourth proportional to 11,331.56, 16,920.96 and 9,255.64 is: 13,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.56 : 16,920.96 = 9,255.64 : x
  2. Step 2: Convert to fraction form
    11,331.56/16,920.96 = 9,255.64/x
  3. Step 3: Cross multiply
    11,331.56x = 16,920.96 × 9,255.64
  4. Step 4: Simplify right side
    11,331.56x = 156,614,314.21
  5. Step 5: Solve for x
    x = 156,614,314.21/11,331.56
  6. Step 6: Final answer
    x = 13,821.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.