Home / 13,540.52-20,312.71-4,181.31

Finding the Fourth Proportional to 13,540.52, 20,312.71 and 4,181.31

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Solution

The fourth proportional to 13,540.52, 20,312.71 and 4,181.31 is: 6,272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.52 : 20,312.71 = 4,181.31 : x
  2. Step 2: Convert to fraction form
    13,540.52/20,312.71 = 4,181.31/x
  3. Step 3: Cross multiply
    13,540.52x = 20,312.71 × 4,181.31
  4. Step 4: Simplify right side
    13,540.52x = 84,933,737.45
  5. Step 5: Solve for x
    x = 84,933,737.45/13,540.52
  6. Step 6: Final answer
    x = 6,272.56

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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.