Home / 13,284.09-18,331.84-8,181.89

Finding the Fourth Proportional to 13,284.09, 18,331.84 and 8,181.89

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Solution

The fourth proportional to 13,284.09, 18,331.84 and 8,181.89 is: 11,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.09 : 18,331.84 = 8,181.89 : x
  2. Step 2: Convert to fraction form
    13,284.09/18,331.84 = 8,181.89/x
  3. Step 3: Cross multiply
    13,284.09x = 18,331.84 × 8,181.89
  4. Step 4: Simplify right side
    13,284.09x = 149,989,057.14
  5. Step 5: Solve for x
    x = 149,989,057.14/13,284.09
  6. Step 6: Final answer
    x = 11,290.88

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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.