Home / 11,890.76-16,409.36-7,174.13

Finding the Fourth Proportional to 11,890.76, 16,409.36 and 7,174.13

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Solution

The fourth proportional to 11,890.76, 16,409.36 and 7,174.13 is: 9,900.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.76 : 16,409.36 = 7,174.13 : x
  2. Step 2: Convert to fraction form
    11,890.76/16,409.36 = 7,174.13/x
  3. Step 3: Cross multiply
    11,890.76x = 16,409.36 × 7,174.13
  4. Step 4: Simplify right side
    11,890.76x = 117,722,817.75
  5. Step 5: Solve for x
    x = 117,722,817.75/11,890.76
  6. Step 6: Final answer
    x = 9,900.37

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Half scale
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Double scale
Find fourth proportional to 11,891.76, 16,410.74 and 7,175.13
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.