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Finding the Fourth Proportional to 18,211.64, 27,318.93 and 5,064.02

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Solution

The fourth proportional to 18,211.64, 27,318.93 and 5,064.02 is: 7,596.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.64 : 27,318.93 = 5,064.02 : x
  2. Step 2: Convert to fraction form
    18,211.64/27,318.93 = 5,064.02/x
  3. Step 3: Cross multiply
    18,211.64x = 27,318.93 × 5,064.02
  4. Step 4: Simplify right side
    18,211.64x = 138,343,607.90
  5. Step 5: Solve for x
    x = 138,343,607.90/18,211.64
  6. Step 6: Final answer
    x = 7,596.44

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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.