Home / 15,487.26-21,372.48-8,413.80

Finding the Fourth Proportional to 15,487.26, 21,372.48 and 8,413.80

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Solution

The fourth proportional to 15,487.26, 21,372.48 and 8,413.80 is: 11,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.26 : 21,372.48 = 8,413.80 : x
  2. Step 2: Convert to fraction form
    15,487.26/21,372.48 = 8,413.80/x
  3. Step 3: Cross multiply
    15,487.26x = 21,372.48 × 8,413.80
  4. Step 4: Simplify right side
    15,487.26x = 179,823,772.22
  5. Step 5: Solve for x
    x = 179,823,772.22/15,487.26
  6. Step 6: Final answer
    x = 11,611.08

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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.