Home / 13,540.11-20,278.96-9,767.99

Finding the Fourth Proportional to 13,540.11, 20,278.96 and 9,767.99

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Solution

The fourth proportional to 13,540.11, 20,278.96 and 9,767.99 is: 14,629.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.11 : 20,278.96 = 9,767.99 : x
  2. Step 2: Convert to fraction form
    13,540.11/20,278.96 = 9,767.99/x
  3. Step 3: Cross multiply
    13,540.11x = 20,278.96 × 9,767.99
  4. Step 4: Simplify right side
    13,540.11x = 198,084,704.77
  5. Step 5: Solve for x
    x = 198,084,704.77/13,540.11
  6. Step 6: Final answer
    x = 14,629.47

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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.