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Finding the Fourth Proportional to 11,920.23, 17,880.48 and 3,600.32

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Solution

The fourth proportional to 11,920.23, 17,880.48 and 3,600.32 is: 5,400.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.23 : 17,880.48 = 3,600.32 : x
  2. Step 2: Convert to fraction form
    11,920.23/17,880.48 = 3,600.32/x
  3. Step 3: Cross multiply
    11,920.23x = 17,880.48 × 3,600.32
  4. Step 4: Simplify right side
    11,920.23x = 64,375,360.35
  5. Step 5: Solve for x
    x = 64,375,360.35/11,920.23
  6. Step 6: Final answer
    x = 5,400.51

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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.