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Finding the Fourth Proportional to 18,663.44, 27,929.40 and 11,646.75

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Solution

The fourth proportional to 18,663.44, 27,929.40 and 11,646.75 is: 17,429.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.44 : 27,929.40 = 11,646.75 : x
  2. Step 2: Convert to fraction form
    18,663.44/27,929.40 = 11,646.75/x
  3. Step 3: Cross multiply
    18,663.44x = 27,929.40 × 11,646.75
  4. Step 4: Simplify right side
    18,663.44x = 325,286,739.45
  5. Step 5: Solve for x
    x = 325,286,739.45/18,663.44
  6. Step 6: Final answer
    x = 17,429.09

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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.