Home / 13,720.97-20,581.12-6,325.43

Finding the Fourth Proportional to 13,720.97, 20,581.12 and 6,325.43

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Solution

The fourth proportional to 13,720.97, 20,581.12 and 6,325.43 is: 9,487.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.97 : 20,581.12 = 6,325.43 : x
  2. Step 2: Convert to fraction form
    13,720.97/20,581.12 = 6,325.43/x
  3. Step 3: Cross multiply
    13,720.97x = 20,581.12 × 6,325.43
  4. Step 4: Simplify right side
    13,720.97x = 130,184,338.88
  5. Step 5: Solve for x
    x = 130,184,338.88/13,720.97
  6. Step 6: Final answer
    x = 9,487.98

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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.