Home / 12,406.23-17,120.61-6,817.23

Finding the Fourth Proportional to 12,406.23, 17,120.61 and 6,817.23

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Solution

The fourth proportional to 12,406.23, 17,120.61 and 6,817.23 is: 9,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.23 : 17,120.61 = 6,817.23 : x
  2. Step 2: Convert to fraction form
    12,406.23/17,120.61 = 6,817.23/x
  3. Step 3: Cross multiply
    12,406.23x = 17,120.61 × 6,817.23
  4. Step 4: Simplify right side
    12,406.23x = 116,715,136.11
  5. Step 5: Solve for x
    x = 116,715,136.11/12,406.23
  6. Step 6: Final answer
    x = 9,407.78

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Half scale
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Double scale
Find fourth proportional to 12,407.23, 17,121.99 and 6,818.23
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.