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Finding the Fourth Proportional to 17,701.20, 26,551.80 and 13,808.88

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Solution

The fourth proportional to 17,701.20, 26,551.80 and 13,808.88 is: 20,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,701.20 : 26,551.80 = 13,808.88 : x
  2. Step 2: Convert to fraction form
    17,701.20/26,551.80 = 13,808.88/x
  3. Step 3: Cross multiply
    17,701.20x = 26,551.80 × 13,808.88
  4. Step 4: Simplify right side
    17,701.20x = 366,650,619.98
  5. Step 5: Solve for x
    x = 366,650,619.98/17,701.20
  6. Step 6: Final answer
    x = 20,713.32

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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.