Home / 15,487.11-21,372.20-8,413.49

Finding the Fourth Proportional to 15,487.11, 21,372.20 and 8,413.49

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Solution

The fourth proportional to 15,487.11, 21,372.20 and 8,413.49 is: 11,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.11 : 21,372.20 = 8,413.49 : x
  2. Step 2: Convert to fraction form
    15,487.11/21,372.20 = 8,413.49/x
  3. Step 3: Cross multiply
    15,487.11x = 21,372.20 × 8,413.49
  4. Step 4: Simplify right side
    15,487.11x = 179,814,642.05
  5. Step 5: Solve for x
    x = 179,814,642.05/15,487.11
  6. Step 6: Final answer
    x = 11,610.60

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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.