Home / 15,188.67-20,960.87-8,814.78

Finding the Fourth Proportional to 15,188.67, 20,960.87 and 8,814.78

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Solution

The fourth proportional to 15,188.67, 20,960.87 and 8,814.78 is: 12,164.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,188.67 : 20,960.87 = 8,814.78 : x
  2. Step 2: Convert to fraction form
    15,188.67/20,960.87 = 8,814.78/x
  3. Step 3: Cross multiply
    15,188.67x = 20,960.87 × 8,814.78
  4. Step 4: Simplify right side
    15,188.67x = 184,765,413.58
  5. Step 5: Solve for x
    x = 184,765,413.58/15,188.67
  6. Step 6: Final answer
    x = 12,164.69

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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.