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Finding the Fourth Proportional to 20,000.84, 30,009.90 and 11,222.60

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Solution

The fourth proportional to 20,000.84, 30,009.90 and 11,222.60 is: 16,838.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.84 : 30,009.90 = 11,222.60 : x
  2. Step 2: Convert to fraction form
    20,000.84/30,009.90 = 11,222.60/x
  3. Step 3: Cross multiply
    20,000.84x = 30,009.90 × 11,222.60
  4. Step 4: Simplify right side
    20,000.84x = 336,789,103.74
  5. Step 5: Solve for x
    x = 336,789,103.74/20,000.84
  6. Step 6: Final answer
    x = 16,838.75

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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.