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Finding the Fourth Proportional to 17,615.14, 26,422.20 and 7,081.90

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Solution

The fourth proportional to 17,615.14, 26,422.20 and 7,081.90 is: 10,622.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,615.14 : 26,422.20 = 7,081.90 : x
  2. Step 2: Convert to fraction form
    17,615.14/26,422.20 = 7,081.90/x
  3. Step 3: Cross multiply
    17,615.14x = 26,422.20 × 7,081.90
  4. Step 4: Simplify right side
    17,615.14x = 187,119,312.12
  5. Step 5: Solve for x
    x = 187,119,312.12/17,615.14
  6. Step 6: Final answer
    x = 10,622.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.