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Finding the Fourth Proportional to 12,355.10, 18,514.31 and 6,493.94

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Solution

The fourth proportional to 12,355.10, 18,514.31 and 6,493.94 is: 9,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.10 : 18,514.31 = 6,493.94 : x
  2. Step 2: Convert to fraction form
    12,355.10/18,514.31 = 6,493.94/x
  3. Step 3: Cross multiply
    12,355.10x = 18,514.31 × 6,493.94
  4. Step 4: Simplify right side
    12,355.10x = 120,230,725.71
  5. Step 5: Solve for x
    x = 120,230,725.71/12,355.10
  6. Step 6: Final answer
    x = 9,731.27

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1.5x scale

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.