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Finding the Fourth Proportional to 11,212.40, 16,775.40 and 7,324.40

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Solution

The fourth proportional to 11,212.40, 16,775.40 and 7,324.40 is: 10,958.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.40 : 16,775.40 = 7,324.40 : x
  2. Step 2: Convert to fraction form
    11,212.40/16,775.40 = 7,324.40/x
  3. Step 3: Cross multiply
    11,212.40x = 16,775.40 × 7,324.40
  4. Step 4: Simplify right side
    11,212.40x = 122,869,739.76
  5. Step 5: Solve for x
    x = 122,869,739.76/11,212.40
  6. Step 6: Final answer
    x = 10,958.38

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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.