Home / 14,480.88-21,721.32-5,115.81

Finding the Fourth Proportional to 14,480.88, 21,721.32 and 5,115.81

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Solution

The fourth proportional to 14,480.88, 21,721.32 and 5,115.81 is: 7,673.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,480.88 : 21,721.32 = 5,115.81 : x
  2. Step 2: Convert to fraction form
    14,480.88/21,721.32 = 5,115.81/x
  3. Step 3: Cross multiply
    14,480.88x = 21,721.32 × 5,115.81
  4. Step 4: Simplify right side
    14,480.88x = 111,122,146.07
  5. Step 5: Solve for x
    x = 111,122,146.07/14,480.88
  6. Step 6: Final answer
    x = 7,673.72

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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.