Home / 13,449.90-20,185.29-9,318.87

Finding the Fourth Proportional to 13,449.90, 20,185.29 and 9,318.87

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Solution

The fourth proportional to 13,449.90, 20,185.29 and 9,318.87 is: 13,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.90 : 20,185.29 = 9,318.87 : x
  2. Step 2: Convert to fraction form
    13,449.90/20,185.29 = 9,318.87/x
  3. Step 3: Cross multiply
    13,449.90x = 20,185.29 × 9,318.87
  4. Step 4: Simplify right side
    13,449.90x = 188,104,093.42
  5. Step 5: Solve for x
    x = 188,104,093.42/13,449.90
  6. Step 6: Final answer
    x = 13,985.54

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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.