Home / 18,342.44-27,429.55-13,665.63

Finding the Fourth Proportional to 18,342.44, 27,429.55 and 13,665.63

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Solution

The fourth proportional to 18,342.44, 27,429.55 and 13,665.63 is: 20,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.44 : 27,429.55 = 13,665.63 : x
  2. Step 2: Convert to fraction form
    18,342.44/27,429.55 = 13,665.63/x
  3. Step 3: Cross multiply
    18,342.44x = 27,429.55 × 13,665.63
  4. Step 4: Simplify right side
    18,342.44x = 374,842,081.37
  5. Step 5: Solve for x
    x = 374,842,081.37/18,342.44
  6. Step 6: Final answer
    x = 20,435.78

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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.