Home / 12,016.20-18,002.70-10,288.20

Finding the Fourth Proportional to 12,016.20, 18,002.70 and 10,288.20

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Solution

The fourth proportional to 12,016.20, 18,002.70 and 10,288.20 is: 15,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,016.20 : 18,002.70 = 10,288.20 : x
  2. Step 2: Convert to fraction form
    12,016.20/18,002.70 = 10,288.20/x
  3. Step 3: Cross multiply
    12,016.20x = 18,002.70 × 10,288.20
  4. Step 4: Simplify right side
    12,016.20x = 185,215,378.14
  5. Step 5: Solve for x
    x = 185,215,378.14/12,016.20
  6. Step 6: Final answer
    x = 15,413.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.