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Finding the Fourth Proportional to 12,716, 19,078.48 and 5,695.44

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Solution

The fourth proportional to 12,716, 19,078.48 and 5,695.44 is: 8,545.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,716 : 19,078.48 = 5,695.44 : x
  2. Step 2: Convert to fraction form
    12,716/19,078.48 = 5,695.44/x
  3. Step 3: Cross multiply
    12,716x = 19,078.48 × 5,695.44
  4. Step 4: Simplify right side
    12,716x = 108,660,338.13
  5. Step 5: Solve for x
    x = 108,660,338.13/12,716
  6. Step 6: Final answer
    x = 8,545.17

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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.