Home / 20,768.68-28,619.58-14,789.80

Finding the Fourth Proportional to 20,768.68, 28,619.58 and 14,789.80

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Solution

The fourth proportional to 20,768.68, 28,619.58 and 14,789.80 is: 20,380.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.68 : 28,619.58 = 14,789.80 : x
  2. Step 2: Convert to fraction form
    20,768.68/28,619.58 = 14,789.80/x
  3. Step 3: Cross multiply
    20,768.68x = 28,619.58 × 14,789.80
  4. Step 4: Simplify right side
    20,768.68x = 423,277,864.28
  5. Step 5: Solve for x
    x = 423,277,864.28/20,768.68
  6. Step 6: Final answer
    x = 20,380.59

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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.