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Finding the Fourth Proportional to 18,659.12, 27,945.52 and 11,247.24

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Solution

The fourth proportional to 18,659.12, 27,945.52 and 11,247.24 is: 16,844.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.12 : 27,945.52 = 11,247.24 : x
  2. Step 2: Convert to fraction form
    18,659.12/27,945.52 = 11,247.24/x
  3. Step 3: Cross multiply
    18,659.12x = 27,945.52 × 11,247.24
  4. Step 4: Simplify right side
    18,659.12x = 314,309,970.36
  5. Step 5: Solve for x
    x = 314,309,970.36/18,659.12
  6. Step 6: Final answer
    x = 16,844.84

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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.