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Finding the Fourth Proportional to 11,003.85, 15,180.54 and 7,365.54

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Solution

The fourth proportional to 11,003.85, 15,180.54 and 7,365.54 is: 10,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,003.85 : 15,180.54 = 7,365.54 : x
  2. Step 2: Convert to fraction form
    11,003.85/15,180.54 = 7,365.54/x
  3. Step 3: Cross multiply
    11,003.85x = 15,180.54 × 7,365.54
  4. Step 4: Simplify right side
    11,003.85x = 111,812,874.59
  5. Step 5: Solve for x
    x = 111,812,874.59/11,003.85
  6. Step 6: Final answer
    x = 10,161.25

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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.