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Finding the Fourth Proportional to 20,166.87, 30,250.46 and 7,019.21

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Solution

The fourth proportional to 20,166.87, 30,250.46 and 7,019.21 is: 10,528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.87 : 30,250.46 = 7,019.21 : x
  2. Step 2: Convert to fraction form
    20,166.87/30,250.46 = 7,019.21/x
  3. Step 3: Cross multiply
    20,166.87x = 30,250.46 × 7,019.21
  4. Step 4: Simplify right side
    20,166.87x = 212,334,254.35
  5. Step 5: Solve for x
    x = 212,334,254.35/20,166.87
  6. Step 6: Final answer
    x = 10,528.86

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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.