Home / 11,685.99-16,120.67-7,705.65

Finding the Fourth Proportional to 11,685.99, 16,120.67 and 7,705.65

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Solution

The fourth proportional to 11,685.99, 16,120.67 and 7,705.65 is: 10,629.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.99 : 16,120.67 = 7,705.65 : x
  2. Step 2: Convert to fraction form
    11,685.99/16,120.67 = 7,705.65/x
  3. Step 3: Cross multiply
    11,685.99x = 16,120.67 × 7,705.65
  4. Step 4: Simplify right side
    11,685.99x = 124,220,202.26
  5. Step 5: Solve for x
    x = 124,220,202.26/11,685.99
  6. Step 6: Final answer
    x = 10,629.84

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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.