Home / 21,135.42-29,164.86-12,635.85

Finding the Fourth Proportional to 21,135.42, 29,164.86 and 12,635.85

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Solution

The fourth proportional to 21,135.42, 29,164.86 and 12,635.85 is: 17,436.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.42 : 29,164.86 = 12,635.85 : x
  2. Step 2: Convert to fraction form
    21,135.42/29,164.86 = 12,635.85/x
  3. Step 3: Cross multiply
    21,135.42x = 29,164.86 × 12,635.85
  4. Step 4: Simplify right side
    21,135.42x = 368,522,905.60
  5. Step 5: Solve for x
    x = 368,522,905.60/21,135.42
  6. Step 6: Final answer
    x = 17,436.27

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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.