Home / 20,447.64-28,217.59-11,373.09

Finding the Fourth Proportional to 20,447.64, 28,217.59 and 11,373.09

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Solution

The fourth proportional to 20,447.64, 28,217.59 and 11,373.09 is: 15,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.64 : 28,217.59 = 11,373.09 : x
  2. Step 2: Convert to fraction form
    20,447.64/28,217.59 = 11,373.09/x
  3. Step 3: Cross multiply
    20,447.64x = 28,217.59 × 11,373.09
  4. Step 4: Simplify right side
    20,447.64x = 320,921,133.79
  5. Step 5: Solve for x
    x = 320,921,133.79/20,447.64
  6. Step 6: Final answer
    x = 15,694.78

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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.