Home / 20,481.46-28,263.78-11,528.43

Finding the Fourth Proportional to 20,481.46, 28,263.78 and 11,528.43

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Solution

The fourth proportional to 20,481.46, 28,263.78 and 11,528.43 is: 15,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.46 : 28,263.78 = 11,528.43 : x
  2. Step 2: Convert to fraction form
    20,481.46/28,263.78 = 11,528.43/x
  3. Step 3: Cross multiply
    20,481.46x = 28,263.78 × 11,528.43
  4. Step 4: Simplify right side
    20,481.46x = 325,837,009.27
  5. Step 5: Solve for x
    x = 325,837,009.27/20,481.46
  6. Step 6: Final answer
    x = 15,908.88

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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.