Home / 10,921.73-16,383.15-3,130.34

Finding the Fourth Proportional to 10,921.73, 16,383.15 and 3,130.34

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Solution

The fourth proportional to 10,921.73, 16,383.15 and 3,130.34 is: 4,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.73 : 16,383.15 = 3,130.34 : x
  2. Step 2: Convert to fraction form
    10,921.73/16,383.15 = 3,130.34/x
  3. Step 3: Cross multiply
    10,921.73x = 16,383.15 × 3,130.34
  4. Step 4: Simplify right side
    10,921.73x = 51,284,747.86
  5. Step 5: Solve for x
    x = 51,284,747.86/10,921.73
  6. Step 6: Final answer
    x = 4,695.66

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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.