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Finding the Fourth Proportional to 16,989.66, 25,484.40 and 5,143.41

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Solution

The fourth proportional to 16,989.66, 25,484.40 and 5,143.41 is: 7,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.66 : 25,484.40 = 5,143.41 : x
  2. Step 2: Convert to fraction form
    16,989.66/25,484.40 = 5,143.41/x
  3. Step 3: Cross multiply
    16,989.66x = 25,484.40 × 5,143.41
  4. Step 4: Simplify right side
    16,989.66x = 131,076,717.80
  5. Step 5: Solve for x
    x = 131,076,717.80/16,989.66
  6. Step 6: Final answer
    x = 7,715.09

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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.