Home / 13,981.75-20,975.51-5,773.75

Finding the Fourth Proportional to 13,981.75, 20,975.51 and 5,773.75

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Solution

The fourth proportional to 13,981.75, 20,975.51 and 5,773.75 is: 8,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.75 : 20,975.51 = 5,773.75 : x
  2. Step 2: Convert to fraction form
    13,981.75/20,975.51 = 5,773.75/x
  3. Step 3: Cross multiply
    13,981.75x = 20,975.51 × 5,773.75
  4. Step 4: Simplify right side
    13,981.75x = 121,107,350.86
  5. Step 5: Solve for x
    x = 121,107,350.86/13,981.75
  6. Step 6: Final answer
    x = 8,661.82

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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.