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Finding the Fourth Proportional to 12,498.60, 18,744.60 and 4,179.36

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Solution

The fourth proportional to 12,498.60, 18,744.60 and 4,179.36 is: 6,267.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.60 : 18,744.60 = 4,179.36 : x
  2. Step 2: Convert to fraction form
    12,498.60/18,744.60 = 4,179.36/x
  3. Step 3: Cross multiply
    12,498.60x = 18,744.60 × 4,179.36
  4. Step 4: Simplify right side
    12,498.60x = 78,340,431.46
  5. Step 5: Solve for x
    x = 78,340,431.46/12,498.60
  6. Step 6: Final answer
    x = 6,267.94

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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.