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Finding the Fourth Proportional to 12,919.08, 17,828.52 and 7,329

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Solution

The fourth proportional to 12,919.08, 17,828.52 and 7,329 is: 10,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.08 : 17,828.52 = 7,329 : x
  2. Step 2: Convert to fraction form
    12,919.08/17,828.52 = 7,329/x
  3. Step 3: Cross multiply
    12,919.08x = 17,828.52 × 7,329
  4. Step 4: Simplify right side
    12,919.08x = 130,665,223.08
  5. Step 5: Solve for x
    x = 130,665,223.08/12,919.08
  6. Step 6: Final answer
    x = 10,114.13

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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.