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Finding the Fourth Proportional to 17,980.67, 27,015.62 and 11,659.57

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Solution

The fourth proportional to 17,980.67, 27,015.62 and 11,659.57 is: 17,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.67 : 27,015.62 = 11,659.57 : x
  2. Step 2: Convert to fraction form
    17,980.67/27,015.62 = 11,659.57/x
  3. Step 3: Cross multiply
    17,980.67x = 27,015.62 × 11,659.57
  4. Step 4: Simplify right side
    17,980.67x = 314,990,386.65
  5. Step 5: Solve for x
    x = 314,990,386.65/17,980.67
  6. Step 6: Final answer
    x = 17,518.28

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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.