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Finding the Fourth Proportional to 19,694.40, 29,541.60 and 8,001.60

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Solution

The fourth proportional to 19,694.40, 29,541.60 and 8,001.60 is: 12,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,694.40 : 29,541.60 = 8,001.60 : x
  2. Step 2: Convert to fraction form
    19,694.40/29,541.60 = 8,001.60/x
  3. Step 3: Cross multiply
    19,694.40x = 29,541.60 × 8,001.60
  4. Step 4: Simplify right side
    19,694.40x = 236,380,066.56
  5. Step 5: Solve for x
    x = 236,380,066.56/19,694.40
  6. Step 6: Final answer
    x = 12,002.40

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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.