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Finding the Fourth Proportional to 16,969.81, 25,478.00 and 8,655.43

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Solution

The fourth proportional to 16,969.81, 25,478.00 and 8,655.43 is: 12,995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,969.81 : 25,478.00 = 8,655.43 : x
  2. Step 2: Convert to fraction form
    16,969.81/25,478.00 = 8,655.43/x
  3. Step 3: Cross multiply
    16,969.81x = 25,478.00 × 8,655.43
  4. Step 4: Simplify right side
    16,969.81x = 220,523,003.48
  5. Step 5: Solve for x
    x = 220,523,003.48/16,969.81
  6. Step 6: Final answer
    x = 12,995.02

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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.