Home / 20,449.58-28,221.54-11,497.64

Finding the Fourth Proportional to 20,449.58, 28,221.54 and 11,497.64

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Solution

The fourth proportional to 20,449.58, 28,221.54 and 11,497.64 is: 15,867.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.58 : 28,221.54 = 11,497.64 : x
  2. Step 2: Convert to fraction form
    20,449.58/28,221.54 = 11,497.64/x
  3. Step 3: Cross multiply
    20,449.58x = 28,221.54 × 11,497.64
  4. Step 4: Simplify right side
    20,449.58x = 324,480,966.06
  5. Step 5: Solve for x
    x = 324,480,966.06/20,449.58
  6. Step 6: Final answer
    x = 15,867.37

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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.