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Finding the Fourth Proportional to 11,005.78, 16,508.70 and 4,849.78

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Solution

The fourth proportional to 11,005.78, 16,508.70 and 4,849.78 is: 7,274.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.78 : 16,508.70 = 4,849.78 : x
  2. Step 2: Convert to fraction form
    11,005.78/16,508.70 = 4,849.78/x
  3. Step 3: Cross multiply
    11,005.78x = 16,508.70 × 4,849.78
  4. Step 4: Simplify right side
    11,005.78x = 80,063,563.09
  5. Step 5: Solve for x
    x = 80,063,563.09/11,005.78
  6. Step 6: Final answer
    x = 7,274.68

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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.