Home / 15,487.45-21,372.69-8,413.88

Finding the Fourth Proportional to 15,487.45, 21,372.69 and 8,413.88

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Solution

The fourth proportional to 15,487.45, 21,372.69 and 8,413.88 is: 11,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.45 : 21,372.69 = 8,413.88 : x
  2. Step 2: Convert to fraction form
    15,487.45/21,372.69 = 8,413.88/x
  3. Step 3: Cross multiply
    15,487.45x = 21,372.69 × 8,413.88
  4. Step 4: Simplify right side
    15,487.45x = 179,827,102.63
  5. Step 5: Solve for x
    x = 179,827,102.63/15,487.45
  6. Step 6: Final answer
    x = 11,611.15

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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.