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Finding the Fourth Proportional to 14,166.78, 21,249.09 and 4,932.78

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Solution

The fourth proportional to 14,166.78, 21,249.09 and 4,932.78 is: 7,398.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,166.78 : 21,249.09 = 4,932.78 : x
  2. Step 2: Convert to fraction form
    14,166.78/21,249.09 = 4,932.78/x
  3. Step 3: Cross multiply
    14,166.78x = 21,249.09 × 4,932.78
  4. Step 4: Simplify right side
    14,166.78x = 104,817,086.17
  5. Step 5: Solve for x
    x = 104,817,086.17/14,166.78
  6. Step 6: Final answer
    x = 7,398.79

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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.