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Finding the Fourth Proportional to 19,786, 27,304.68 and 10,954

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Solution

The fourth proportional to 19,786, 27,304.68 and 10,954 is: 15,116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786 : 27,304.68 = 10,954 : x
  2. Step 2: Convert to fraction form
    19,786/27,304.68 = 10,954/x
  3. Step 3: Cross multiply
    19,786x = 27,304.68 × 10,954
  4. Step 4: Simplify right side
    19,786x = 299,095,464.72
  5. Step 5: Solve for x
    x = 299,095,464.72/19,786
  6. Step 6: Final answer
    x = 15,116.52

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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.