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Finding the Fourth Proportional to 20,018.62, 30,018.01 and 11,700.73

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Solution

The fourth proportional to 20,018.62, 30,018.01 and 11,700.73 is: 17,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.62 : 30,018.01 = 11,700.73 : x
  2. Step 2: Convert to fraction form
    20,018.62/30,018.01 = 11,700.73/x
  3. Step 3: Cross multiply
    20,018.62x = 30,018.01 × 11,700.73
  4. Step 4: Simplify right side
    20,018.62x = 351,232,630.15
  5. Step 5: Solve for x
    x = 351,232,630.15/20,018.62
  6. Step 6: Final answer
    x = 17,545.30

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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.