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Finding the Fourth Proportional to 12,087.43, 16,680.43 and 7,054.90

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Solution

The fourth proportional to 12,087.43, 16,680.43 and 7,054.90 is: 9,735.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.43 : 16,680.43 = 7,054.90 : x
  2. Step 2: Convert to fraction form
    12,087.43/16,680.43 = 7,054.90/x
  3. Step 3: Cross multiply
    12,087.43x = 16,680.43 × 7,054.90
  4. Step 4: Simplify right side
    12,087.43x = 117,678,732.72
  5. Step 5: Solve for x
    x = 117,678,732.72/12,087.43
  6. Step 6: Final answer
    x = 9,735.63

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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.