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Finding the Fourth Proportional to 18,656.51, 27,983.85 and 6,968.81

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Solution

The fourth proportional to 18,656.51, 27,983.85 and 6,968.81 is: 10,452.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.51 : 27,983.85 = 6,968.81 : x
  2. Step 2: Convert to fraction form
    18,656.51/27,983.85 = 6,968.81/x
  3. Step 3: Cross multiply
    18,656.51x = 27,983.85 × 6,968.81
  4. Step 4: Simplify right side
    18,656.51x = 195,014,177.55
  5. Step 5: Solve for x
    x = 195,014,177.55/18,656.51
  6. Step 6: Final answer
    x = 10,452.88

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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.