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Finding the Fourth Proportional to 19,550, 26,979 and 10,718

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Solution

The fourth proportional to 19,550, 26,979 and 10,718 is: 14,790.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,550 : 26,979 = 10,718 : x
  2. Step 2: Convert to fraction form
    19,550/26,979 = 10,718/x
  3. Step 3: Cross multiply
    19,550x = 26,979 × 10,718
  4. Step 4: Simplify right side
    19,550x = 289,160,922
  5. Step 5: Solve for x
    x = 289,160,922/19,550
  6. Step 6: Final answer
    x = 14,790.84

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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.