Home / 21,408.66-29,544.75-11,977.29

Finding the Fourth Proportional to 21,408.66, 29,544.75 and 11,977.29

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Solution

The fourth proportional to 21,408.66, 29,544.75 and 11,977.29 is: 16,529.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.66 : 29,544.75 = 11,977.29 : x
  2. Step 2: Convert to fraction form
    21,408.66/29,544.75 = 11,977.29/x
  3. Step 3: Cross multiply
    21,408.66x = 29,544.75 × 11,977.29
  4. Step 4: Simplify right side
    21,408.66x = 353,866,038.73
  5. Step 5: Solve for x
    x = 353,866,038.73/21,408.66
  6. Step 6: Final answer
    x = 16,529.11

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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.