Home / 13,715.88-18,928.26-8,413.62

Finding the Fourth Proportional to 13,715.88, 18,928.26 and 8,413.62

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Solution

The fourth proportional to 13,715.88, 18,928.26 and 8,413.62 is: 11,611.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.88 : 18,928.26 = 8,413.62 : x
  2. Step 2: Convert to fraction form
    13,715.88/18,928.26 = 8,413.62/x
  3. Step 3: Cross multiply
    13,715.88x = 18,928.26 × 8,413.62
  4. Step 4: Simplify right side
    13,715.88x = 159,255,186.90
  5. Step 5: Solve for x
    x = 159,255,186.90/13,715.88
  6. Step 6: Final answer
    x = 11,611.01

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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.