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Finding the Fourth Proportional to 19,959.98, 29,958.51 and 10,106.15

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Solution

The fourth proportional to 19,959.98, 29,958.51 and 10,106.15 is: 15,168.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.98 : 29,958.51 = 10,106.15 : x
  2. Step 2: Convert to fraction form
    19,959.98/29,958.51 = 10,106.15/x
  3. Step 3: Cross multiply
    19,959.98x = 29,958.51 × 10,106.15
  4. Step 4: Simplify right side
    19,959.98x = 302,765,195.84
  5. Step 5: Solve for x
    x = 302,765,195.84/19,959.98
  6. Step 6: Final answer
    x = 15,168.61

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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.