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Finding the Fourth Proportional to 12,919.10, 19,360.17 and 7,360.97

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Solution

The fourth proportional to 12,919.10, 19,360.17 and 7,360.97 is: 11,030.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.10 : 19,360.17 = 7,360.97 : x
  2. Step 2: Convert to fraction form
    12,919.10/19,360.17 = 7,360.97/x
  3. Step 3: Cross multiply
    12,919.10x = 19,360.17 × 7,360.97
  4. Step 4: Simplify right side
    12,919.10x = 142,509,630.56
  5. Step 5: Solve for x
    x = 142,509,630.56/12,919.10
  6. Step 6: Final answer
    x = 11,030.93

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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.