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Finding the Fourth Proportional to 14,413.99, 19,893.12 and 8,447.94

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Solution

The fourth proportional to 14,413.99, 19,893.12 and 8,447.94 is: 11,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,413.99 : 19,893.12 = 8,447.94 : x
  2. Step 2: Convert to fraction form
    14,413.99/19,893.12 = 8,447.94/x
  3. Step 3: Cross multiply
    14,413.99x = 19,893.12 × 8,447.94
  4. Step 4: Simplify right side
    14,413.99x = 168,055,884.17
  5. Step 5: Solve for x
    x = 168,055,884.17/14,413.99
  6. Step 6: Final answer
    x = 11,659.22

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1.5x scale

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.