Home / 18,221.81-27,339.60-7,136.42

Finding the Fourth Proportional to 18,221.81, 27,339.60 and 7,136.42

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Solution

The fourth proportional to 18,221.81, 27,339.60 and 7,136.42 is: 10,707.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.81 : 27,339.60 = 7,136.42 : x
  2. Step 2: Convert to fraction form
    18,221.81/27,339.60 = 7,136.42/x
  3. Step 3: Cross multiply
    18,221.81x = 27,339.60 × 7,136.42
  4. Step 4: Simplify right side
    18,221.81x = 195,106,868.23
  5. Step 5: Solve for x
    x = 195,106,868.23/18,221.81
  6. Step 6: Final answer
    x = 10,707.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.