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Finding the Fourth Proportional to 11,287.30, 16,937.44 and 8,815.18

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Solution

The fourth proportional to 11,287.30, 16,937.44 and 8,815.18 is: 13,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.30 : 16,937.44 = 8,815.18 : x
  2. Step 2: Convert to fraction form
    11,287.30/16,937.44 = 8,815.18/x
  3. Step 3: Cross multiply
    11,287.30x = 16,937.44 × 8,815.18
  4. Step 4: Simplify right side
    11,287.30x = 149,306,582.34
  5. Step 5: Solve for x
    x = 149,306,582.34/11,287.30
  6. Step 6: Final answer
    x = 13,227.84

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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.