Home / 11,920.38-16,450.20-6,615.24

Finding the Fourth Proportional to 11,920.38, 16,450.20 and 6,615.24

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Solution

The fourth proportional to 11,920.38, 16,450.20 and 6,615.24 is: 9,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.38 : 16,450.20 = 6,615.24 : x
  2. Step 2: Convert to fraction form
    11,920.38/16,450.20 = 6,615.24/x
  3. Step 3: Cross multiply
    11,920.38x = 16,450.20 × 6,615.24
  4. Step 4: Simplify right side
    11,920.38x = 108,822,021.05
  5. Step 5: Solve for x
    x = 108,822,021.05/11,920.38
  6. Step 6: Final answer
    x = 9,129.07

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Double scale
Find fourth proportional to 11,921.38, 16,451.58 and 6,616.24
Similar ratio
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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.