Home / 12,406.13-17,120.38-6,740.83

Finding the Fourth Proportional to 12,406.13, 17,120.38 and 6,740.83

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Solution

The fourth proportional to 12,406.13, 17,120.38 and 6,740.83 is: 9,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.13 : 17,120.38 = 6,740.83 : x
  2. Step 2: Convert to fraction form
    12,406.13/17,120.38 = 6,740.83/x
  3. Step 3: Cross multiply
    12,406.13x = 17,120.38 × 6,740.83
  4. Step 4: Simplify right side
    12,406.13x = 115,405,537.41
  5. Step 5: Solve for x
    x = 115,405,537.41/12,406.13
  6. Step 6: Final answer
    x = 9,302.30

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Half scale
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Double scale
Find fourth proportional to 12,407.13, 17,121.75 and 6,741.83
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.