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Finding the Fourth Proportional to 19,819.11, 29,710.04 and 6,662.28

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Solution

The fourth proportional to 19,819.11, 29,710.04 and 6,662.28 is: 9,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.11 : 29,710.04 = 6,662.28 : x
  2. Step 2: Convert to fraction form
    19,819.11/29,710.04 = 6,662.28/x
  3. Step 3: Cross multiply
    19,819.11x = 29,710.04 × 6,662.28
  4. Step 4: Simplify right side
    19,819.11x = 197,936,571.98
  5. Step 5: Solve for x
    x = 197,936,571.98/19,819.11
  6. Step 6: Final answer
    x = 9,987.16

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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.