Home / 10,921.38-16,383.06-4,679.98

Finding the Fourth Proportional to 10,921.38, 16,383.06 and 4,679.98

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Solution

The fourth proportional to 10,921.38, 16,383.06 and 4,679.98 is: 7,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.38 : 16,383.06 = 4,679.98 : x
  2. Step 2: Convert to fraction form
    10,921.38/16,383.06 = 4,679.98/x
  3. Step 3: Cross multiply
    10,921.38x = 16,383.06 × 4,679.98
  4. Step 4: Simplify right side
    10,921.38x = 76,672,352.18
  5. Step 5: Solve for x
    x = 76,672,352.18/10,921.38
  6. Step 6: Final answer
    x = 7,020.39

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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.