Home / 20,297.79-28,016.38-12,342.58

Finding the Fourth Proportional to 20,297.79, 28,016.38 and 12,342.58

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Solution

The fourth proportional to 20,297.79, 28,016.38 and 12,342.58 is: 17,036.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.79 : 28,016.38 = 12,342.58 : x
  2. Step 2: Convert to fraction form
    20,297.79/28,016.38 = 12,342.58/x
  3. Step 3: Cross multiply
    20,297.79x = 28,016.38 × 12,342.58
  4. Step 4: Simplify right side
    20,297.79x = 345,794,356.85
  5. Step 5: Solve for x
    x = 345,794,356.85/20,297.79
  6. Step 6: Final answer
    x = 17,036.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.