Home / 12,406.08-17,121.44-6,818.24

Finding the Fourth Proportional to 12,406.08, 17,121.44 and 6,818.24

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Solution

The fourth proportional to 12,406.08, 17,121.44 and 6,818.24 is: 9,409.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.08 : 17,121.44 = 6,818.24 : x
  2. Step 2: Convert to fraction form
    12,406.08/17,121.44 = 6,818.24/x
  3. Step 3: Cross multiply
    12,406.08x = 17,121.44 × 6,818.24
  4. Step 4: Simplify right side
    12,406.08x = 116,738,087.07
  5. Step 5: Solve for x
    x = 116,738,087.07/12,406.08
  6. Step 6: Final answer
    x = 9,409.75

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Half scale
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Double scale
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Similar ratio
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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.