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Finding the Fourth Proportional to 12,958.36, 17,879.36 and 7,292

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Solution

The fourth proportional to 12,958.36, 17,879.36 and 7,292 is: 10,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,958.36 : 17,879.36 = 7,292 : x
  2. Step 2: Convert to fraction form
    12,958.36/17,879.36 = 7,292/x
  3. Step 3: Cross multiply
    12,958.36x = 17,879.36 × 7,292
  4. Step 4: Simplify right side
    12,958.36x = 130,376,293.12
  5. Step 5: Solve for x
    x = 130,376,293.12/12,958.36
  6. Step 6: Final answer
    x = 10,061.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.