Home / 20,136.65-27,771.59-15,112.62

Finding the Fourth Proportional to 20,136.65, 27,771.59 and 15,112.62

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Solution

The fourth proportional to 20,136.65, 27,771.59 and 15,112.62 is: 20,842.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.65 : 27,771.59 = 15,112.62 : x
  2. Step 2: Convert to fraction form
    20,136.65/27,771.59 = 15,112.62/x
  3. Step 3: Cross multiply
    20,136.65x = 27,771.59 × 15,112.62
  4. Step 4: Simplify right side
    20,136.65x = 419,701,524.25
  5. Step 5: Solve for x
    x = 419,701,524.25/20,136.65
  6. Step 6: Final answer
    x = 20,842.67

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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.