Home / 20,770.79-31,155.17-7,622.33

Finding the Fourth Proportional to 20,770.79, 31,155.17 and 7,622.33

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Solution

The fourth proportional to 20,770.79, 31,155.17 and 7,622.33 is: 11,433.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.79 : 31,155.17 = 7,622.33 : x
  2. Step 2: Convert to fraction form
    20,770.79/31,155.17 = 7,622.33/x
  3. Step 3: Cross multiply
    20,770.79x = 31,155.17 × 7,622.33
  4. Step 4: Simplify right side
    20,770.79x = 237,474,793.06
  5. Step 5: Solve for x
    x = 237,474,793.06/20,770.79
  6. Step 6: Final answer
    x = 11,433.12

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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.