Home / 20,153.90-30,166.04-10,770.42

Finding the Fourth Proportional to 20,153.90, 30,166.04 and 10,770.42

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Solution

The fourth proportional to 20,153.90, 30,166.04 and 10,770.42 is: 16,120.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.90 : 30,166.04 = 10,770.42 : x
  2. Step 2: Convert to fraction form
    20,153.90/30,166.04 = 10,770.42/x
  3. Step 3: Cross multiply
    20,153.90x = 30,166.04 × 10,770.42
  4. Step 4: Simplify right side
    20,153.90x = 324,900,920.54
  5. Step 5: Solve for x
    x = 324,900,920.54/20,153.90
  6. Step 6: Final answer
    x = 16,120.99

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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.