Home / 21,372.84-29,493.36-11,939.58

Finding the Fourth Proportional to 21,372.84, 29,493.36 and 11,939.58

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Solution

The fourth proportional to 21,372.84, 29,493.36 and 11,939.58 is: 16,475.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.84 : 29,493.36 = 11,939.58 : x
  2. Step 2: Convert to fraction form
    21,372.84/29,493.36 = 11,939.58/x
  3. Step 3: Cross multiply
    21,372.84x = 29,493.36 × 11,939.58
  4. Step 4: Simplify right side
    21,372.84x = 352,138,331.19
  5. Step 5: Solve for x
    x = 352,138,331.19/21,372.84
  6. Step 6: Final answer
    x = 16,475.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.