Home / 20,136.87-27,790.29-14,170.55

Finding the Fourth Proportional to 20,136.87, 27,790.29 and 14,170.55

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Solution

The fourth proportional to 20,136.87, 27,790.29 and 14,170.55 is: 19,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.87 : 27,790.29 = 14,170.55 : x
  2. Step 2: Convert to fraction form
    20,136.87/27,790.29 = 14,170.55/x
  3. Step 3: Cross multiply
    20,136.87x = 27,790.29 × 14,170.55
  4. Step 4: Simplify right side
    20,136.87x = 393,803,555.01
  5. Step 5: Solve for x
    x = 393,803,555.01/20,136.87
  6. Step 6: Final answer
    x = 19,556.34

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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.