Home / 13,540.50-20,312.70-4,181.32

Finding the Fourth Proportional to 13,540.50, 20,312.70 and 4,181.32

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Solution

The fourth proportional to 13,540.50, 20,312.70 and 4,181.32 is: 6,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.50 : 20,312.70 = 4,181.32 : x
  2. Step 2: Convert to fraction form
    13,540.50/20,312.70 = 4,181.32/x
  3. Step 3: Cross multiply
    13,540.50x = 20,312.70 × 4,181.32
  4. Step 4: Simplify right side
    13,540.50x = 84,933,877.86
  5. Step 5: Solve for x
    x = 84,933,877.86/13,540.50
  6. Step 6: Final answer
    x = 6,272.58

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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.