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Finding the Fourth Proportional to 17,857.16, 26,784.66 and 7,993.79

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Solution

The fourth proportional to 17,857.16, 26,784.66 and 7,993.79 is: 11,990.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,857.16 : 26,784.66 = 7,993.79 : x
  2. Step 2: Convert to fraction form
    17,857.16/26,784.66 = 7,993.79/x
  3. Step 3: Cross multiply
    17,857.16x = 26,784.66 × 7,993.79
  4. Step 4: Simplify right side
    17,857.16x = 214,110,813.34
  5. Step 5: Solve for x
    x = 214,110,813.34/17,857.16
  6. Step 6: Final answer
    x = 11,990.20

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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.