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Finding the Fourth Proportional to 12,491.46, 17,238.92 and 6,826.73

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Solution

The fourth proportional to 12,491.46, 17,238.92 and 6,826.73 is: 9,421.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.46 : 17,238.92 = 6,826.73 : x
  2. Step 2: Convert to fraction form
    12,491.46/17,238.92 = 6,826.73/x
  3. Step 3: Cross multiply
    12,491.46x = 17,238.92 × 6,826.73
  4. Step 4: Simplify right side
    12,491.46x = 117,685,332.00
  5. Step 5: Solve for x
    x = 117,685,332.00/12,491.46
  6. Step 6: Final answer
    x = 9,421.26

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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.