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Finding the Fourth Proportional to 22,143.40, 33,223.20 and 21,333.40

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Solution

The fourth proportional to 22,143.40, 33,223.20 and 21,333.40 is: 32,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.40 : 33,223.20 = 21,333.40 : x
  2. Step 2: Convert to fraction form
    22,143.40/33,223.20 = 21,333.40/x
  3. Step 3: Cross multiply
    22,143.40x = 33,223.20 × 21,333.40
  4. Step 4: Simplify right side
    22,143.40x = 708,763,814.88
  5. Step 5: Solve for x
    x = 708,763,814.88/22,143.40
  6. Step 6: Final answer
    x = 32,007.90

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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.