Home / 12,200.23-16,830.13-7,716.43

Finding the Fourth Proportional to 12,200.23, 16,830.13 and 7,716.43

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Solution

The fourth proportional to 12,200.23, 16,830.13 and 7,716.43 is: 10,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.23 : 16,830.13 = 7,716.43 : x
  2. Step 2: Convert to fraction form
    12,200.23/16,830.13 = 7,716.43/x
  3. Step 3: Cross multiply
    12,200.23x = 16,830.13 × 7,716.43
  4. Step 4: Simplify right side
    12,200.23x = 129,868,520.04
  5. Step 5: Solve for x
    x = 129,868,520.04/12,200.23
  6. Step 6: Final answer
    x = 10,644.76

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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.