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Finding the Fourth Proportional to 19,959.81, 27,544.05 and 11,007.15

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Solution

The fourth proportional to 19,959.81, 27,544.05 and 11,007.15 is: 15,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.81 : 27,544.05 = 11,007.15 : x
  2. Step 2: Convert to fraction form
    19,959.81/27,544.05 = 11,007.15/x
  3. Step 3: Cross multiply
    19,959.81x = 27,544.05 × 11,007.15
  4. Step 4: Simplify right side
    19,959.81x = 303,181,489.96
  5. Step 5: Solve for x
    x = 303,181,489.96/19,959.81
  6. Step 6: Final answer
    x = 15,189.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.