Home / 28,440.66-39,249.18-15,867.84

Finding the Fourth Proportional to 28,440.66, 39,249.18 and 15,867.84

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Solution

The fourth proportional to 28,440.66, 39,249.18 and 15,867.84 is: 21,898.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.66 : 39,249.18 = 15,867.84 : x
  2. Step 2: Convert to fraction form
    28,440.66/39,249.18 = 15,867.84/x
  3. Step 3: Cross multiply
    28,440.66x = 39,249.18 × 15,867.84
  4. Step 4: Simplify right side
    28,440.66x = 622,799,708.37
  5. Step 5: Solve for x
    x = 622,799,708.37/28,440.66
  6. Step 6: Final answer
    x = 21,898.22

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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.