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Finding the Fourth Proportional to 17,120.76, 25,639.17 and 14,140.98

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Solution

The fourth proportional to 17,120.76, 25,639.17 and 14,140.98 is: 21,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,120.76 : 25,639.17 = 14,140.98 : x
  2. Step 2: Convert to fraction form
    17,120.76/25,639.17 = 14,140.98/x
  3. Step 3: Cross multiply
    17,120.76x = 25,639.17 × 14,140.98
  4. Step 4: Simplify right side
    17,120.76x = 362,562,990.19
  5. Step 5: Solve for x
    x = 362,562,990.19/17,120.76
  6. Step 6: Final answer
    x = 21,176.80

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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.