Home / 18,940.86-28,377.36-11,541.42

Finding the Fourth Proportional to 18,940.86, 28,377.36 and 11,541.42

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Solution

The fourth proportional to 18,940.86, 28,377.36 and 11,541.42 is: 17,291.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.86 : 28,377.36 = 11,541.42 : x
  2. Step 2: Convert to fraction form
    18,940.86/28,377.36 = 11,541.42/x
  3. Step 3: Cross multiply
    18,940.86x = 28,377.36 × 11,541.42
  4. Step 4: Simplify right side
    18,940.86x = 327,515,030.25
  5. Step 5: Solve for x
    x = 327,515,030.25/18,940.86
  6. Step 6: Final answer
    x = 17,291.46

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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.