Home / 20,145.73-30,211.35-7,662.43

Finding the Fourth Proportional to 20,145.73, 30,211.35 and 7,662.43

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Solution

The fourth proportional to 20,145.73, 30,211.35 and 7,662.43 is: 11,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.73 : 30,211.35 = 7,662.43 : x
  2. Step 2: Convert to fraction form
    20,145.73/30,211.35 = 7,662.43/x
  3. Step 3: Cross multiply
    20,145.73x = 30,211.35 × 7,662.43
  4. Step 4: Simplify right side
    20,145.73x = 231,492,354.58
  5. Step 5: Solve for x
    x = 231,492,354.58/20,145.73
  6. Step 6: Final answer
    x = 11,490.89

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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.