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Finding the Fourth Proportional to 21,153.67, 29,194.98 and 12,200.98

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Solution

The fourth proportional to 21,153.67, 29,194.98 and 12,200.98 is: 16,839.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.67 : 29,194.98 = 12,200.98 : x
  2. Step 2: Convert to fraction form
    21,153.67/29,194.98 = 12,200.98/x
  3. Step 3: Cross multiply
    21,153.67x = 29,194.98 × 12,200.98
  4. Step 4: Simplify right side
    21,153.67x = 356,207,367.08
  5. Step 5: Solve for x
    x = 356,207,367.08/21,153.67
  6. Step 6: Final answer
    x = 16,839.03

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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.