Home / 18,786.47-28,179.77-15,259.86

Finding the Fourth Proportional to 18,786.47, 28,179.77 and 15,259.86

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Solution

The fourth proportional to 18,786.47, 28,179.77 and 15,259.86 is: 22,889.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.47 : 28,179.77 = 15,259.86 : x
  2. Step 2: Convert to fraction form
    18,786.47/28,179.77 = 15,259.86/x
  3. Step 3: Cross multiply
    18,786.47x = 28,179.77 × 15,259.86
  4. Step 4: Simplify right side
    18,786.47x = 430,019,268.73
  5. Step 5: Solve for x
    x = 430,019,268.73/18,786.47
  6. Step 6: Final answer
    x = 22,889.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.