Home / 11,921.16-17,887.50-4,906.35

Finding the Fourth Proportional to 11,921.16, 17,887.50 and 4,906.35

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Solution

The fourth proportional to 11,921.16, 17,887.50 and 4,906.35 is: 7,361.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.16 : 17,887.50 = 4,906.35 : x
  2. Step 2: Convert to fraction form
    11,921.16/17,887.50 = 4,906.35/x
  3. Step 3: Cross multiply
    11,921.16x = 17,887.50 × 4,906.35
  4. Step 4: Simplify right side
    11,921.16x = 87,762,335.63
  5. Step 5: Solve for x
    x = 87,762,335.63/11,921.16
  6. Step 6: Final answer
    x = 7,361.90

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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.