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Finding the Fourth Proportional to 35,162.97, 52,738.79 and 12,986.79

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Solution

The fourth proportional to 35,162.97, 52,738.79 and 12,986.79 is: 19,478.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,162.97 : 52,738.79 = 12,986.79 : x
  2. Step 2: Convert to fraction form
    35,162.97/52,738.79 = 12,986.79/x
  3. Step 3: Cross multiply
    35,162.97x = 52,738.79 × 12,986.79
  4. Step 4: Simplify right side
    35,162.97x = 684,907,525.65
  5. Step 5: Solve for x
    x = 684,907,525.65/35,162.97
  6. Step 6: Final answer
    x = 19,478.09

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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.