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Finding the Fourth Proportional to 11,109.60, 16,662.60 and 9,247.56

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Solution

The fourth proportional to 11,109.60, 16,662.60 and 9,247.56 is: 13,869.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.60 : 16,662.60 = 9,247.56 : x
  2. Step 2: Convert to fraction form
    11,109.60/16,662.60 = 9,247.56/x
  3. Step 3: Cross multiply
    11,109.60x = 16,662.60 × 9,247.56
  4. Step 4: Simplify right side
    11,109.60x = 154,088,393.26
  5. Step 5: Solve for x
    x = 154,088,393.26/11,109.60
  6. Step 6: Final answer
    x = 13,869.84

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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.