Home / 20,615.56-28,449.49-11,662.88

Finding the Fourth Proportional to 20,615.56, 28,449.49 and 11,662.88

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Solution

The fourth proportional to 20,615.56, 28,449.49 and 11,662.88 is: 16,094.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.56 : 28,449.49 = 11,662.88 : x
  2. Step 2: Convert to fraction form
    20,615.56/28,449.49 = 11,662.88/x
  3. Step 3: Cross multiply
    20,615.56x = 28,449.49 × 11,662.88
  4. Step 4: Simplify right side
    20,615.56x = 331,802,987.93
  5. Step 5: Solve for x
    x = 331,802,987.93/20,615.56
  6. Step 6: Final answer
    x = 16,094.78

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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.