Home / 18,771.14-28,193.16-13,821.23

Finding the Fourth Proportional to 18,771.14, 28,193.16 and 13,821.23

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Solution

The fourth proportional to 18,771.14, 28,193.16 and 13,821.23 is: 20,758.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.14 : 28,193.16 = 13,821.23 : x
  2. Step 2: Convert to fraction form
    18,771.14/28,193.16 = 13,821.23/x
  3. Step 3: Cross multiply
    18,771.14x = 28,193.16 × 13,821.23
  4. Step 4: Simplify right side
    18,771.14x = 389,664,148.79
  5. Step 5: Solve for x
    x = 389,664,148.79/18,771.14
  6. Step 6: Final answer
    x = 20,758.68

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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.