Home / 18,743.14-28,136.31-12,858.22

Finding the Fourth Proportional to 18,743.14, 28,136.31 and 12,858.22

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Solution

The fourth proportional to 18,743.14, 28,136.31 and 12,858.22 is: 19,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.14 : 28,136.31 = 12,858.22 : x
  2. Step 2: Convert to fraction form
    18,743.14/28,136.31 = 12,858.22/x
  3. Step 3: Cross multiply
    18,743.14x = 28,136.31 × 12,858.22
  4. Step 4: Simplify right side
    18,743.14x = 361,782,863.97
  5. Step 5: Solve for x
    x = 361,782,863.97/18,743.14
  6. Step 6: Final answer
    x = 19,302.15

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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.