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Finding the Fourth Proportional to 20,550.70, 30,807.54 and 7,393.84

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Solution

The fourth proportional to 20,550.70, 30,807.54 and 7,393.84 is: 11,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.70 : 30,807.54 = 7,393.84 : x
  2. Step 2: Convert to fraction form
    20,550.70/30,807.54 = 7,393.84/x
  3. Step 3: Cross multiply
    20,550.70x = 30,807.54 × 7,393.84
  4. Step 4: Simplify right side
    20,550.70x = 227,786,021.55
  5. Step 5: Solve for x
    x = 227,786,021.55/20,550.70
  6. Step 6: Final answer
    x = 11,084.10

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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.