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Finding the Fourth Proportional to 12,620.58, 18,898.04 and 6,748.48

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Solution

The fourth proportional to 12,620.58, 18,898.04 and 6,748.48 is: 10,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.58 : 18,898.04 = 6,748.48 : x
  2. Step 2: Convert to fraction form
    12,620.58/18,898.04 = 6,748.48/x
  3. Step 3: Cross multiply
    12,620.58x = 18,898.04 × 6,748.48
  4. Step 4: Simplify right side
    12,620.58x = 127,533,044.98
  5. Step 5: Solve for x
    x = 127,533,044.98/12,620.58
  6. Step 6: Final answer
    x = 10,105.17

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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.