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Finding the Fourth Proportional to 8,563.73, 12,816.41 and 7,178.63

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Solution

The fourth proportional to 8,563.73, 12,816.41 and 7,178.63 is: 10,743.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,563.73 : 12,816.41 = 7,178.63 : x
  2. Step 2: Convert to fraction form
    8,563.73/12,816.41 = 7,178.63/x
  3. Step 3: Cross multiply
    8,563.73x = 12,816.41 × 7,178.63
  4. Step 4: Simplify right side
    8,563.73x = 92,004,165.34
  5. Step 5: Solve for x
    x = 92,004,165.34/8,563.73
  6. Step 6: Final answer
    x = 10,743.47

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1.5x scale

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.