Home / 14,579.91-20,121.30-8,207.12

Finding the Fourth Proportional to 14,579.91, 20,121.30 and 8,207.12

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Solution

The fourth proportional to 14,579.91, 20,121.30 and 8,207.12 is: 11,326.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.91 : 20,121.30 = 8,207.12 : x
  2. Step 2: Convert to fraction form
    14,579.91/20,121.30 = 8,207.12/x
  3. Step 3: Cross multiply
    14,579.91x = 20,121.30 × 8,207.12
  4. Step 4: Simplify right side
    14,579.91x = 165,137,823.05
  5. Step 5: Solve for x
    x = 165,137,823.05/14,579.91
  6. Step 6: Final answer
    x = 11,326.40

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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.