Home / 14,400.28-19,872.69-8,112.66

Finding the Fourth Proportional to 14,400.28, 19,872.69 and 8,112.66

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Solution

The fourth proportional to 14,400.28, 19,872.69 and 8,112.66 is: 11,195.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.28 : 19,872.69 = 8,112.66 : x
  2. Step 2: Convert to fraction form
    14,400.28/19,872.69 = 8,112.66/x
  3. Step 3: Cross multiply
    14,400.28x = 19,872.69 × 8,112.66
  4. Step 4: Simplify right side
    14,400.28x = 161,220,317.94
  5. Step 5: Solve for x
    x = 161,220,317.94/14,400.28
  6. Step 6: Final answer
    x = 11,195.64

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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.