Home / 11,921.24-17,881.02-3,155.96

Finding the Fourth Proportional to 11,921.24, 17,881.02 and 3,155.96

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Solution

The fourth proportional to 11,921.24, 17,881.02 and 3,155.96 is: 4,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.24 : 17,881.02 = 3,155.96 : x
  2. Step 2: Convert to fraction form
    11,921.24/17,881.02 = 3,155.96/x
  3. Step 3: Cross multiply
    11,921.24x = 17,881.02 × 3,155.96
  4. Step 4: Simplify right side
    11,921.24x = 56,431,783.88
  5. Step 5: Solve for x
    x = 56,431,783.88/11,921.24
  6. Step 6: Final answer
    x = 4,733.72

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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.