Home / 20,703.60-28,568.70-11,628.90

Finding the Fourth Proportional to 20,703.60, 28,568.70 and 11,628.90

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Solution

The fourth proportional to 20,703.60, 28,568.70 and 11,628.90 is: 16,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.60 : 28,568.70 = 11,628.90 : x
  2. Step 2: Convert to fraction form
    20,703.60/28,568.70 = 11,628.90/x
  3. Step 3: Cross multiply
    20,703.60x = 28,568.70 × 11,628.90
  4. Step 4: Simplify right side
    20,703.60x = 332,222,555.43
  5. Step 5: Solve for x
    x = 332,222,555.43/20,703.60
  6. Step 6: Final answer
    x = 16,046.61

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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.