Home / 31,518.85-47,247.90-18,178.15

Finding the Fourth Proportional to 31,518.85, 47,247.90 and 18,178.15

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Solution

The fourth proportional to 31,518.85, 47,247.90 and 18,178.15 is: 27,249.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.85 : 47,247.90 = 18,178.15 : x
  2. Step 2: Convert to fraction form
    31,518.85/47,247.90 = 18,178.15/x
  3. Step 3: Cross multiply
    31,518.85x = 47,247.90 × 18,178.15
  4. Step 4: Simplify right side
    31,518.85x = 858,879,413.39
  5. Step 5: Solve for x
    x = 858,879,413.39/31,518.85
  6. Step 6: Final answer
    x = 27,249.71

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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.