Home / 20,143.35-30,215.43-9,614.43

Finding the Fourth Proportional to 20,143.35, 30,215.43 and 9,614.43

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Solution

The fourth proportional to 20,143.35, 30,215.43 and 9,614.43 is: 14,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.35 : 30,215.43 = 9,614.43 : x
  2. Step 2: Convert to fraction form
    20,143.35/30,215.43 = 9,614.43/x
  3. Step 3: Cross multiply
    20,143.35x = 30,215.43 × 9,614.43
  4. Step 4: Simplify right side
    20,143.35x = 290,504,136.65
  5. Step 5: Solve for x
    x = 290,504,136.65/20,143.35
  6. Step 6: Final answer
    x = 14,421.84

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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.