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Finding the Fourth Proportional to 16,893.60, 25,355.90 and 8,579.40

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Solution

The fourth proportional to 16,893.60, 25,355.90 and 8,579.40 is: 12,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,893.60 : 25,355.90 = 8,579.40 : x
  2. Step 2: Convert to fraction form
    16,893.60/25,355.90 = 8,579.40/x
  3. Step 3: Cross multiply
    16,893.60x = 25,355.90 × 8,579.40
  4. Step 4: Simplify right side
    16,893.60x = 217,538,408.46
  5. Step 5: Solve for x
    x = 217,538,408.46/16,893.60
  6. Step 6: Final answer
    x = 12,876.97

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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.