Home / 13,421.22-20,131.86-3,561.30

Finding the Fourth Proportional to 13,421.22, 20,131.86 and 3,561.30

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Solution

The fourth proportional to 13,421.22, 20,131.86 and 3,561.30 is: 5,341.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.22 : 20,131.86 = 3,561.30 : x
  2. Step 2: Convert to fraction form
    13,421.22/20,131.86 = 3,561.30/x
  3. Step 3: Cross multiply
    13,421.22x = 20,131.86 × 3,561.30
  4. Step 4: Simplify right side
    13,421.22x = 71,695,593.02
  5. Step 5: Solve for x
    x = 71,695,593.02/13,421.22
  6. Step 6: Final answer
    x = 5,341.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.