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Finding the Fourth Proportional to 19,694.48, 29,508.88 and 14,139.48

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Solution

The fourth proportional to 19,694.48, 29,508.88 and 14,139.48 is: 21,185.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,694.48 : 29,508.88 = 14,139.48 : x
  2. Step 2: Convert to fraction form
    19,694.48/29,508.88 = 14,139.48/x
  3. Step 3: Cross multiply
    19,694.48x = 29,508.88 × 14,139.48
  4. Step 4: Simplify right side
    19,694.48x = 417,240,218.58
  5. Step 5: Solve for x
    x = 417,240,218.58/19,694.48
  6. Step 6: Final answer
    x = 21,185.64

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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.