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Finding the Fourth Proportional to 18,239.31, 27,344.39 and 7,143.93

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Solution

The fourth proportional to 18,239.31, 27,344.39 and 7,143.93 is: 10,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,239.31 : 27,344.39 = 7,143.93 : x
  2. Step 2: Convert to fraction form
    18,239.31/27,344.39 = 7,143.93/x
  3. Step 3: Cross multiply
    18,239.31x = 27,344.39 × 7,143.93
  4. Step 4: Simplify right side
    18,239.31x = 195,346,372.33
  5. Step 5: Solve for x
    x = 195,346,372.33/18,239.31
  6. Step 6: Final answer
    x = 10,710.18

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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.