Home / 13,433.46-20,129.67-5,638.02

Finding the Fourth Proportional to 13,433.46, 20,129.67 and 5,638.02

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Solution

The fourth proportional to 13,433.46, 20,129.67 and 5,638.02 is: 8,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.46 : 20,129.67 = 5,638.02 : x
  2. Step 2: Convert to fraction form
    13,433.46/20,129.67 = 5,638.02/x
  3. Step 3: Cross multiply
    13,433.46x = 20,129.67 × 5,638.02
  4. Step 4: Simplify right side
    13,433.46x = 113,491,482.05
  5. Step 5: Solve for x
    x = 113,491,482.05/13,433.46
  6. Step 6: Final answer
    x = 8,448.42

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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.