Home / 20,136.69-27,778.99-14,171.67

Finding the Fourth Proportional to 20,136.69, 27,778.99 and 14,171.67

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Solution

The fourth proportional to 20,136.69, 27,778.99 and 14,171.67 is: 19,550.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.69 : 27,778.99 = 14,171.67 : x
  2. Step 2: Convert to fraction form
    20,136.69/27,778.99 = 14,171.67/x
  3. Step 3: Cross multiply
    20,136.69x = 27,778.99 × 14,171.67
  4. Step 4: Simplify right side
    20,136.69x = 393,674,679.21
  5. Step 5: Solve for x
    x = 393,674,679.21/20,136.69
  6. Step 6: Final answer
    x = 19,550.12

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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.