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Finding the Fourth Proportional to 22,172.20, 33,209.70 and 19,256.20

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Solution

The fourth proportional to 22,172.20, 33,209.70 and 19,256.20 is: 28,842.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,172.20 : 33,209.70 = 19,256.20 : x
  2. Step 2: Convert to fraction form
    22,172.20/33,209.70 = 19,256.20/x
  3. Step 3: Cross multiply
    22,172.20x = 33,209.70 × 19,256.20
  4. Step 4: Simplify right side
    22,172.20x = 639,492,625.14
  5. Step 5: Solve for x
    x = 639,492,625.14/22,172.20
  6. Step 6: Final answer
    x = 28,842.09

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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.