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Finding the Fourth Proportional to 16,680.60, 25,018.74 and 6,291

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Solution

The fourth proportional to 16,680.60, 25,018.74 and 6,291 is: 9,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,680.60 : 25,018.74 = 6,291 : x
  2. Step 2: Convert to fraction form
    16,680.60/25,018.74 = 6,291/x
  3. Step 3: Cross multiply
    16,680.60x = 25,018.74 × 6,291
  4. Step 4: Simplify right side
    16,680.60x = 157,392,893.34
  5. Step 5: Solve for x
    x = 157,392,893.34/16,680.60
  6. Step 6: Final answer
    x = 9,435.69

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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.