Home / 13,420.11-20,131.16-3,559.17

Finding the Fourth Proportional to 13,420.11, 20,131.16 and 3,559.17

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Solution

The fourth proportional to 13,420.11, 20,131.16 and 3,559.17 is: 5,339.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.11 : 20,131.16 = 3,559.17 : x
  2. Step 2: Convert to fraction form
    13,420.11/20,131.16 = 3,559.17/x
  3. Step 3: Cross multiply
    13,420.11x = 20,131.16 × 3,559.17
  4. Step 4: Simplify right side
    13,420.11x = 71,650,202.94
  5. Step 5: Solve for x
    x = 71,650,202.94/13,420.11
  6. Step 6: Final answer
    x = 5,339.02

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1.5x scale

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.