Home / 21,241.92-29,310.63-12,165.87

Finding the Fourth Proportional to 21,241.92, 29,310.63 and 12,165.87

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Solution

The fourth proportional to 21,241.92, 29,310.63 and 12,165.87 is: 16,787.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.92 : 29,310.63 = 12,165.87 : x
  2. Step 2: Convert to fraction form
    21,241.92/29,310.63 = 12,165.87/x
  3. Step 3: Cross multiply
    21,241.92x = 29,310.63 × 12,165.87
  4. Step 4: Simplify right side
    21,241.92x = 356,589,314.20
  5. Step 5: Solve for x
    x = 356,589,314.20/21,241.92
  6. Step 6: Final answer
    x = 16,787.06

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1.5x scale

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.