Home / 28,023.88-38,674.74-15,449.80

Finding the Fourth Proportional to 28,023.88, 38,674.74 and 15,449.80

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Solution

The fourth proportional to 28,023.88, 38,674.74 and 15,449.80 is: 21,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.88 : 38,674.74 = 15,449.80 : x
  2. Step 2: Convert to fraction form
    28,023.88/38,674.74 = 15,449.80/x
  3. Step 3: Cross multiply
    28,023.88x = 38,674.74 × 15,449.80
  4. Step 4: Simplify right side
    28,023.88x = 597,516,998.05
  5. Step 5: Solve for x
    x = 597,516,998.05/28,023.88
  6. Step 6: Final answer
    x = 21,321.71

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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.