Home / 12,406.23-17,121.67-6,818.31

Finding the Fourth Proportional to 12,406.23, 17,121.67 and 6,818.31

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Solution

The fourth proportional to 12,406.23, 17,121.67 and 6,818.31 is: 9,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.23 : 17,121.67 = 6,818.31 : x
  2. Step 2: Convert to fraction form
    12,406.23/17,121.67 = 6,818.31/x
  3. Step 3: Cross multiply
    12,406.23x = 17,121.67 × 6,818.31
  4. Step 4: Simplify right side
    12,406.23x = 116,740,836.73
  5. Step 5: Solve for x
    x = 116,740,836.73/12,406.23
  6. Step 6: Final answer
    x = 9,409.86

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Half scale
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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.