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Finding the Fourth Proportional to 18,773.16, 28,163.72 and 7,086.28

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Solution

The fourth proportional to 18,773.16, 28,163.72 and 7,086.28 is: 10,630.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.16 : 28,163.72 = 7,086.28 : x
  2. Step 2: Convert to fraction form
    18,773.16/28,163.72 = 7,086.28/x
  3. Step 3: Cross multiply
    18,773.16x = 28,163.72 × 7,086.28
  4. Step 4: Simplify right side
    18,773.16x = 199,576,005.76
  5. Step 5: Solve for x
    x = 199,576,005.76/18,773.16
  6. Step 6: Final answer
    x = 10,630.92

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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.