Home / 11,836.40-16,324.20-7,119.80

Finding the Fourth Proportional to 11,836.40, 16,324.20 and 7,119.80

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Solution

The fourth proportional to 11,836.40, 16,324.20 and 7,119.80 is: 9,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,836.40 : 16,324.20 = 7,119.80 : x
  2. Step 2: Convert to fraction form
    11,836.40/16,324.20 = 7,119.80/x
  3. Step 3: Cross multiply
    11,836.40x = 16,324.20 × 7,119.80
  4. Step 4: Simplify right side
    11,836.40x = 116,225,039.16
  5. Step 5: Solve for x
    x = 116,225,039.16/11,836.40
  6. Step 6: Final answer
    x = 9,819.29

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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.