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Finding the Fourth Proportional to 15,480.92, 21,365 and 8,767.73

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Solution

The fourth proportional to 15,480.92, 21,365 and 8,767.73 is: 12,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480.92 : 21,365 = 8,767.73 : x
  2. Step 2: Convert to fraction form
    15,480.92/21,365 = 8,767.73/x
  3. Step 3: Cross multiply
    15,480.92x = 21,365 × 8,767.73
  4. Step 4: Simplify right side
    15,480.92x = 187,322,551.45
  5. Step 5: Solve for x
    x = 187,322,551.45/15,480.92
  6. Step 6: Final answer
    x = 12,100.22

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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.