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Finding the Fourth Proportional to 39,797.64, 54,922.59 and 21,892.32

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Solution

The fourth proportional to 39,797.64, 54,922.59 and 21,892.32 is: 30,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,797.64 : 54,922.59 = 21,892.32 : x
  2. Step 2: Convert to fraction form
    39,797.64/54,922.59 = 21,892.32/x
  3. Step 3: Cross multiply
    39,797.64x = 54,922.59 × 21,892.32
  4. Step 4: Simplify right side
    39,797.64x = 1,202,382,915.51
  5. Step 5: Solve for x
    x = 1,202,382,915.51/39,797.64
  6. Step 6: Final answer
    x = 30,212.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.