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Finding the Fourth Proportional to 21,394.58, 29,523.02 and 12,441.44

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Solution

The fourth proportional to 21,394.58, 29,523.02 and 12,441.44 is: 17,168.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,394.58 : 29,523.02 = 12,441.44 : x
  2. Step 2: Convert to fraction form
    21,394.58/29,523.02 = 12,441.44/x
  3. Step 3: Cross multiply
    21,394.58x = 29,523.02 × 12,441.44
  4. Step 4: Simplify right side
    21,394.58x = 367,308,893.55
  5. Step 5: Solve for x
    x = 367,308,893.55/21,394.58
  6. Step 6: Final answer
    x = 17,168.32

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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.