Home / 10,755.20-16,111.21-5,489.99

Finding the Fourth Proportional to 10,755.20, 16,111.21 and 5,489.99

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Solution

The fourth proportional to 10,755.20, 16,111.21 and 5,489.99 is: 8,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,755.20 : 16,111.21 = 5,489.99 : x
  2. Step 2: Convert to fraction form
    10,755.20/16,111.21 = 5,489.99/x
  3. Step 3: Cross multiply
    10,755.20x = 16,111.21 × 5,489.99
  4. Step 4: Simplify right side
    10,755.20x = 88,450,381.79
  5. Step 5: Solve for x
    x = 88,450,381.79/10,755.20
  6. Step 6: Final answer
    x = 8,223.96

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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.