Home / 21,408.56-32,115.48-7,371.44

Finding the Fourth Proportional to 21,408.56, 32,115.48 and 7,371.44

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Solution

The fourth proportional to 21,408.56, 32,115.48 and 7,371.44 is: 11,058.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.56 : 32,115.48 = 7,371.44 : x
  2. Step 2: Convert to fraction form
    21,408.56/32,115.48 = 7,371.44/x
  3. Step 3: Cross multiply
    21,408.56x = 32,115.48 × 7,371.44
  4. Step 4: Simplify right side
    21,408.56x = 236,737,333.89
  5. Step 5: Solve for x
    x = 236,737,333.89/21,408.56
  6. Step 6: Final answer
    x = 11,058.07

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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.