Home / 20,429.94-28,194.46-12,469.88

Finding the Fourth Proportional to 20,429.94, 28,194.46 and 12,469.88

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Solution

The fourth proportional to 20,429.94, 28,194.46 and 12,469.88 is: 17,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.94 : 28,194.46 = 12,469.88 : x
  2. Step 2: Convert to fraction form
    20,429.94/28,194.46 = 12,469.88/x
  3. Step 3: Cross multiply
    20,429.94x = 28,194.46 × 12,469.88
  4. Step 4: Simplify right side
    20,429.94x = 351,581,532.86
  5. Step 5: Solve for x
    x = 351,581,532.86/20,429.94
  6. Step 6: Final answer
    x = 17,209.13

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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.