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Finding the Fourth Proportional to 20,168.38, 30,250.14 and 7,019.65

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Solution

The fourth proportional to 20,168.38, 30,250.14 and 7,019.65 is: 10,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.38 : 30,250.14 = 7,019.65 : x
  2. Step 2: Convert to fraction form
    20,168.38/30,250.14 = 7,019.65/x
  3. Step 3: Cross multiply
    20,168.38x = 30,250.14 × 7,019.65
  4. Step 4: Simplify right side
    20,168.38x = 212,345,395.25
  5. Step 5: Solve for x
    x = 212,345,395.25/20,168.38
  6. Step 6: Final answer
    x = 10,528.63

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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.