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Finding the Fourth Proportional to 17,143.88, 25,718.70 and 5,460.68

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Solution

The fourth proportional to 17,143.88, 25,718.70 and 5,460.68 is: 8,191.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.88 : 25,718.70 = 5,460.68 : x
  2. Step 2: Convert to fraction form
    17,143.88/25,718.70 = 5,460.68/x
  3. Step 3: Cross multiply
    17,143.88x = 25,718.70 × 5,460.68
  4. Step 4: Simplify right side
    17,143.88x = 140,441,590.72
  5. Step 5: Solve for x
    x = 140,441,590.72/17,143.88
  6. Step 6: Final answer
    x = 8,191.94

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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.