Home / 21,153.21-29,194.49-12,198.93

Finding the Fourth Proportional to 21,153.21, 29,194.49 and 12,198.93

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Solution

The fourth proportional to 21,153.21, 29,194.49 and 12,198.93 is: 16,836.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.21 : 29,194.49 = 12,198.93 : x
  2. Step 2: Convert to fraction form
    21,153.21/29,194.49 = 12,198.93/x
  3. Step 3: Cross multiply
    21,153.21x = 29,194.49 × 12,198.93
  4. Step 4: Simplify right side
    21,153.21x = 356,141,478.90
  5. Step 5: Solve for x
    x = 356,141,478.90/21,153.21
  6. Step 6: Final answer
    x = 16,836.29

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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.