Home / 11,321.19-16,981.76-7,424.69

Finding the Fourth Proportional to 11,321.19, 16,981.76 and 7,424.69

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Solution

The fourth proportional to 11,321.19, 16,981.76 and 7,424.69 is: 11,137.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.19 : 16,981.76 = 7,424.69 : x
  2. Step 2: Convert to fraction form
    11,321.19/16,981.76 = 7,424.69/x
  3. Step 3: Cross multiply
    11,321.19x = 16,981.76 × 7,424.69
  4. Step 4: Simplify right side
    11,321.19x = 126,084,181.62
  5. Step 5: Solve for x
    x = 126,084,181.62/11,321.19
  6. Step 6: Final answer
    x = 11,137.01

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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.