Home / 28,015.54-38,660.97-15,268.88

Finding the Fourth Proportional to 28,015.54, 38,660.97 and 15,268.88

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Solution

The fourth proportional to 28,015.54, 38,660.97 and 15,268.88 is: 21,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.54 : 38,660.97 = 15,268.88 : x
  2. Step 2: Convert to fraction form
    28,015.54/38,660.97 = 15,268.88/x
  3. Step 3: Cross multiply
    28,015.54x = 38,660.97 × 15,268.88
  4. Step 4: Simplify right side
    28,015.54x = 590,309,711.61
  5. Step 5: Solve for x
    x = 590,309,711.61/28,015.54
  6. Step 6: Final answer
    x = 21,070.80

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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.