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Finding the Fourth Proportional to 22,128.40, 33,192.60 and 10,464.40

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Solution

The fourth proportional to 22,128.40, 33,192.60 and 10,464.40 is: 15,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,128.40 : 33,192.60 = 10,464.40 : x
  2. Step 2: Convert to fraction form
    22,128.40/33,192.60 = 10,464.40/x
  3. Step 3: Cross multiply
    22,128.40x = 33,192.60 × 10,464.40
  4. Step 4: Simplify right side
    22,128.40x = 347,340,643.44
  5. Step 5: Solve for x
    x = 347,340,643.44/22,128.40
  6. Step 6: Final answer
    x = 15,696.60

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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.