Home / 20,768.53-28,660.56-11,337.09

Finding the Fourth Proportional to 20,768.53, 28,660.56 and 11,337.09

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Solution

The fourth proportional to 20,768.53, 28,660.56 and 11,337.09 is: 15,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.53 : 28,660.56 = 11,337.09 : x
  2. Step 2: Convert to fraction form
    20,768.53/28,660.56 = 11,337.09/x
  3. Step 3: Cross multiply
    20,768.53x = 28,660.56 × 11,337.09
  4. Step 4: Simplify right side
    20,768.53x = 324,927,348.17
  5. Step 5: Solve for x
    x = 324,927,348.17/20,768.53
  6. Step 6: Final answer
    x = 15,645.18

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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.