Home / 12,392.49-17,115.83-8,162.46

Finding the Fourth Proportional to 12,392.49, 17,115.83 and 8,162.46

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Solution

The fourth proportional to 12,392.49, 17,115.83 and 8,162.46 is: 11,273.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.49 : 17,115.83 = 8,162.46 : x
  2. Step 2: Convert to fraction form
    12,392.49/17,115.83 = 8,162.46/x
  3. Step 3: Cross multiply
    12,392.49x = 17,115.83 × 8,162.46
  4. Step 4: Simplify right side
    12,392.49x = 139,707,277.74
  5. Step 5: Solve for x
    x = 139,707,277.74/12,392.49
  6. Step 6: Final answer
    x = 11,273.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.