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Finding the Fourth Proportional to 22,087.34, 30,481.34 and 12,657.72

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Solution

The fourth proportional to 22,087.34, 30,481.34 and 12,657.72 is: 17,468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,087.34 : 30,481.34 = 12,657.72 : x
  2. Step 2: Convert to fraction form
    22,087.34/30,481.34 = 12,657.72/x
  3. Step 3: Cross multiply
    22,087.34x = 30,481.34 × 12,657.72
  4. Step 4: Simplify right side
    22,087.34x = 385,824,203.66
  5. Step 5: Solve for x
    x = 385,824,203.66/22,087.34
  6. Step 6: Final answer
    x = 17,468.12

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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.