Home / 14,479.97-21,720.15-4,091.72

Finding the Fourth Proportional to 14,479.97, 21,720.15 and 4,091.72

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Solution

The fourth proportional to 14,479.97, 21,720.15 and 4,091.72 is: 6,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,479.97 : 21,720.15 = 4,091.72 : x
  2. Step 2: Convert to fraction form
    14,479.97/21,720.15 = 4,091.72/x
  3. Step 3: Cross multiply
    14,479.97x = 21,720.15 × 4,091.72
  4. Step 4: Simplify right side
    14,479.97x = 88,872,663.56
  5. Step 5: Solve for x
    x = 88,872,663.56/14,479.97
  6. Step 6: Final answer
    x = 6,137.63

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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.