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Finding the Fourth Proportional to 17,071.65, 25,662.15 and 12,175.20

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Solution

The fourth proportional to 17,071.65, 25,662.15 and 12,175.20 is: 18,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,071.65 : 25,662.15 = 12,175.20 : x
  2. Step 2: Convert to fraction form
    17,071.65/25,662.15 = 12,175.20/x
  3. Step 3: Cross multiply
    17,071.65x = 25,662.15 × 12,175.20
  4. Step 4: Simplify right side
    17,071.65x = 312,441,808.68
  5. Step 5: Solve for x
    x = 312,441,808.68/17,071.65
  6. Step 6: Final answer
    x = 18,301.79

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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.