Home / 11,161.80-16,742.70-9,898.20

Finding the Fourth Proportional to 11,161.80, 16,742.70 and 9,898.20

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Solution

The fourth proportional to 11,161.80, 16,742.70 and 9,898.20 is: 14,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.80 : 16,742.70 = 9,898.20 : x
  2. Step 2: Convert to fraction form
    11,161.80/16,742.70 = 9,898.20/x
  3. Step 3: Cross multiply
    11,161.80x = 16,742.70 × 9,898.20
  4. Step 4: Simplify right side
    11,161.80x = 165,722,593.14
  5. Step 5: Solve for x
    x = 165,722,593.14/11,161.80
  6. Step 6: Final answer
    x = 14,847.30

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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.