Home / 21,231.30-29,299.55-11,671.58

Finding the Fourth Proportional to 21,231.30, 29,299.55 and 11,671.58

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Solution

The fourth proportional to 21,231.30, 29,299.55 and 11,671.58 is: 16,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.30 : 29,299.55 = 11,671.58 : x
  2. Step 2: Convert to fraction form
    21,231.30/29,299.55 = 11,671.58/x
  3. Step 3: Cross multiply
    21,231.30x = 29,299.55 × 11,671.58
  4. Step 4: Simplify right side
    21,231.30x = 341,972,214.87
  5. Step 5: Solve for x
    x = 341,972,214.87/21,231.30
  6. Step 6: Final answer
    x = 16,106.98

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