Home / 20,910.42-28,843.71-12,406.94

Finding the Fourth Proportional to 20,910.42, 28,843.71 and 12,406.94

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Solution

The fourth proportional to 20,910.42, 28,843.71 and 12,406.94 is: 17,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.42 : 28,843.71 = 12,406.94 : x
  2. Step 2: Convert to fraction form
    20,910.42/28,843.71 = 12,406.94/x
  3. Step 3: Cross multiply
    20,910.42x = 28,843.71 × 12,406.94
  4. Step 4: Simplify right side
    20,910.42x = 357,862,204.93
  5. Step 5: Solve for x
    x = 357,862,204.93/20,910.42
  6. Step 6: Final answer
    x = 17,114.06

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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.