Home / 20,905.14-28,850.85-12,524.34

Finding the Fourth Proportional to 20,905.14, 28,850.85 and 12,524.34

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Solution

The fourth proportional to 20,905.14, 28,850.85 and 12,524.34 is: 17,284.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.14 : 28,850.85 = 12,524.34 : x
  2. Step 2: Convert to fraction form
    20,905.14/28,850.85 = 12,524.34/x
  3. Step 3: Cross multiply
    20,905.14x = 28,850.85 × 12,524.34
  4. Step 4: Simplify right side
    20,905.14x = 361,337,854.69
  5. Step 5: Solve for x
    x = 361,337,854.69/20,905.14
  6. Step 6: Final answer
    x = 17,284.64

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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.