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Finding the Fourth Proportional to 19,549.97, 26,978.66 and 11,051.79

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Solution

The fourth proportional to 19,549.97, 26,978.66 and 11,051.79 is: 15,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,549.97 : 26,978.66 = 11,051.79 : x
  2. Step 2: Convert to fraction form
    19,549.97/26,978.66 = 11,051.79/x
  3. Step 3: Cross multiply
    19,549.97x = 26,978.66 × 11,051.79
  4. Step 4: Simplify right side
    19,549.97x = 298,162,484.80
  5. Step 5: Solve for x
    x = 298,162,484.80/19,549.97
  6. Step 6: Final answer
    x = 15,251.30

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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.