Home / 20,621.54-30,928.80-6,770.54

Finding the Fourth Proportional to 20,621.54, 30,928.80 and 6,770.54

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Solution

The fourth proportional to 20,621.54, 30,928.80 and 6,770.54 is: 10,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.54 : 30,928.80 = 6,770.54 : x
  2. Step 2: Convert to fraction form
    20,621.54/30,928.80 = 6,770.54/x
  3. Step 3: Cross multiply
    20,621.54x = 30,928.80 × 6,770.54
  4. Step 4: Simplify right side
    20,621.54x = 209,404,677.55
  5. Step 5: Solve for x
    x = 209,404,677.55/20,621.54
  6. Step 6: Final answer
    x = 10,154.66

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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.