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Finding the Fourth Proportional to 11,269.80, 16,900.65 and 5,721.30

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Solution

The fourth proportional to 11,269.80, 16,900.65 and 5,721.30 is: 8,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,269.80 : 16,900.65 = 5,721.30 : x
  2. Step 2: Convert to fraction form
    11,269.80/16,900.65 = 5,721.30/x
  3. Step 3: Cross multiply
    11,269.80x = 16,900.65 × 5,721.30
  4. Step 4: Simplify right side
    11,269.80x = 96,693,688.85
  5. Step 5: Solve for x
    x = 96,693,688.85/11,269.80
  6. Step 6: Final answer
    x = 8,579.89

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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.