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Finding the Fourth Proportional to 22,505.60, 33,693.60 and 20,172.80

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Solution

The fourth proportional to 22,505.60, 33,693.60 and 20,172.80 is: 30,201.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,505.60 : 33,693.60 = 20,172.80 : x
  2. Step 2: Convert to fraction form
    22,505.60/33,693.60 = 20,172.80/x
  3. Step 3: Cross multiply
    22,505.60x = 33,693.60 × 20,172.80
  4. Step 4: Simplify right side
    22,505.60x = 679,694,254.08
  5. Step 5: Solve for x
    x = 679,694,254.08/22,505.60
  6. Step 6: Final answer
    x = 30,201.12

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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.