Home / 21,269.88-29,355.22-12,198.80

Finding the Fourth Proportional to 21,269.88, 29,355.22 and 12,198.80

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Solution

The fourth proportional to 21,269.88, 29,355.22 and 12,198.80 is: 16,835.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.88 : 29,355.22 = 12,198.80 : x
  2. Step 2: Convert to fraction form
    21,269.88/29,355.22 = 12,198.80/x
  3. Step 3: Cross multiply
    21,269.88x = 29,355.22 × 12,198.80
  4. Step 4: Simplify right side
    21,269.88x = 358,098,457.74
  5. Step 5: Solve for x
    x = 358,098,457.74/21,269.88
  6. Step 6: Final answer
    x = 16,835.94

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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.