Home / 28,440.66-39,249.32-15,865.41

Finding the Fourth Proportional to 28,440.66, 39,249.32 and 15,865.41

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Solution

The fourth proportional to 28,440.66, 39,249.32 and 15,865.41 is: 21,894.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.66 : 39,249.32 = 15,865.41 : x
  2. Step 2: Convert to fraction form
    28,440.66/39,249.32 = 15,865.41/x
  3. Step 3: Cross multiply
    28,440.66x = 39,249.32 × 15,865.41
  4. Step 4: Simplify right side
    28,440.66x = 622,706,474.69
  5. Step 5: Solve for x
    x = 622,706,474.69/28,440.66
  6. Step 6: Final answer
    x = 21,894.94

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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.