Home / 13,540.63-20,312.16-3,679.96

Finding the Fourth Proportional to 13,540.63, 20,312.16 and 3,679.96

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Solution

The fourth proportional to 13,540.63, 20,312.16 and 3,679.96 is: 5,520.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.63 : 20,312.16 = 3,679.96 : x
  2. Step 2: Convert to fraction form
    13,540.63/20,312.16 = 3,679.96/x
  3. Step 3: Cross multiply
    13,540.63x = 20,312.16 × 3,679.96
  4. Step 4: Simplify right side
    13,540.63x = 74,747,936.31
  5. Step 5: Solve for x
    x = 74,747,936.31/13,540.63
  6. Step 6: Final answer
    x = 5,520.27

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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.