Home / 13,904.64-20,851.20-5,146.56

Finding the Fourth Proportional to 13,904.64, 20,851.20 and 5,146.56

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Solution

The fourth proportional to 13,904.64, 20,851.20 and 5,146.56 is: 7,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,904.64 : 20,851.20 = 5,146.56 : x
  2. Step 2: Convert to fraction form
    13,904.64/20,851.20 = 5,146.56/x
  3. Step 3: Cross multiply
    13,904.64x = 20,851.20 × 5,146.56
  4. Step 4: Simplify right side
    13,904.64x = 107,311,951.87
  5. Step 5: Solve for x
    x = 107,311,951.87/13,904.64
  6. Step 6: Final answer
    x = 7,717.71

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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.