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Finding the Fourth Proportional to 13,605.99, 20,413.39 and 6,675.63

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Solution

The fourth proportional to 13,605.99, 20,413.39 and 6,675.63 is: 10,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.99 : 20,413.39 = 6,675.63 : x
  2. Step 2: Convert to fraction form
    13,605.99/20,413.39 = 6,675.63/x
  3. Step 3: Cross multiply
    13,605.99x = 20,413.39 × 6,675.63
  4. Step 4: Simplify right side
    13,605.99x = 136,272,103.24
  5. Step 5: Solve for x
    x = 136,272,103.24/13,605.99
  6. Step 6: Final answer
    x = 10,015.60

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1.5x scale

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.