Home / 18,558.25-27,843.51-12,342.70

Finding the Fourth Proportional to 18,558.25, 27,843.51 and 12,342.70

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Solution

The fourth proportional to 18,558.25, 27,843.51 and 12,342.70 is: 18,518.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.25 : 27,843.51 = 12,342.70 : x
  2. Step 2: Convert to fraction form
    18,558.25/27,843.51 = 12,342.70/x
  3. Step 3: Cross multiply
    18,558.25x = 27,843.51 × 12,342.70
  4. Step 4: Simplify right side
    18,558.25x = 343,664,090.88
  5. Step 5: Solve for x
    x = 343,664,090.88/18,558.25
  6. Step 6: Final answer
    x = 18,518.13

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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.