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Finding the Fourth Proportional to 21,480.78, 32,201.73 and 7,626.54

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Solution

The fourth proportional to 21,480.78, 32,201.73 and 7,626.54 is: 11,432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.78 : 32,201.73 = 7,626.54 : x
  2. Step 2: Convert to fraction form
    21,480.78/32,201.73 = 7,626.54/x
  3. Step 3: Cross multiply
    21,480.78x = 32,201.73 × 7,626.54
  4. Step 4: Simplify right side
    21,480.78x = 245,587,781.91
  5. Step 5: Solve for x
    x = 245,587,781.91/21,480.78
  6. Step 6: Final answer
    x = 11,432.91

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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.