Home / 13,136.14-18,129.39-7,315.84

Finding the Fourth Proportional to 13,136.14, 18,129.39 and 7,315.84

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Solution

The fourth proportional to 13,136.14, 18,129.39 and 7,315.84 is: 10,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.14 : 18,129.39 = 7,315.84 : x
  2. Step 2: Convert to fraction form
    13,136.14/18,129.39 = 7,315.84/x
  3. Step 3: Cross multiply
    13,136.14x = 18,129.39 × 7,315.84
  4. Step 4: Simplify right side
    13,136.14x = 132,631,716.54
  5. Step 5: Solve for x
    x = 132,631,716.54/13,136.14
  6. Step 6: Final answer
    x = 10,096.70

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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.