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Finding the Fourth Proportional to 19,698.12, 29,552.04 and 18,078.12

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Solution

The fourth proportional to 19,698.12, 29,552.04 and 18,078.12 is: 27,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,698.12 : 29,552.04 = 18,078.12 : x
  2. Step 2: Convert to fraction form
    19,698.12/29,552.04 = 18,078.12/x
  3. Step 3: Cross multiply
    19,698.12x = 29,552.04 × 18,078.12
  4. Step 4: Simplify right side
    19,698.12x = 534,245,325.36
  5. Step 5: Solve for x
    x = 534,245,325.36/19,698.12
  6. Step 6: Final answer
    x = 27,121.64

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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.