Home / 20,768.43-28,660.59-11,337.24

Finding the Fourth Proportional to 20,768.43, 28,660.59 and 11,337.24

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Solution

The fourth proportional to 20,768.43, 28,660.59 and 11,337.24 is: 15,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.43 : 28,660.59 = 11,337.24 : x
  2. Step 2: Convert to fraction form
    20,768.43/28,660.59 = 11,337.24/x
  3. Step 3: Cross multiply
    20,768.43x = 28,660.59 × 11,337.24
  4. Step 4: Simplify right side
    20,768.43x = 324,931,987.37
  5. Step 5: Solve for x
    x = 324,931,987.37/20,768.43
  6. Step 6: Final answer
    x = 15,645.48

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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.