Home / 28,661.86-39,552.64-15,914.65

Finding the Fourth Proportional to 28,661.86, 39,552.64 and 15,914.65

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Solution

The fourth proportional to 28,661.86, 39,552.64 and 15,914.65 is: 21,961.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.86 : 39,552.64 = 15,914.65 : x
  2. Step 2: Convert to fraction form
    28,661.86/39,552.64 = 15,914.65/x
  3. Step 3: Cross multiply
    28,661.86x = 39,552.64 × 15,914.65
  4. Step 4: Simplify right side
    28,661.86x = 629,466,422.18
  5. Step 5: Solve for x
    x = 629,466,422.18/28,661.86
  6. Step 6: Final answer
    x = 21,961.81

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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.