Home / 21,317.27-31,980.51-8,169.65

Finding the Fourth Proportional to 21,317.27, 31,980.51 and 8,169.65

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Solution

The fourth proportional to 21,317.27, 31,980.51 and 8,169.65 is: 12,256.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.27 : 31,980.51 = 8,169.65 : x
  2. Step 2: Convert to fraction form
    21,317.27/31,980.51 = 8,169.65/x
  3. Step 3: Cross multiply
    21,317.27x = 31,980.51 × 8,169.65
  4. Step 4: Simplify right side
    21,317.27x = 261,269,413.62
  5. Step 5: Solve for x
    x = 261,269,413.62/21,317.27
  6. Step 6: Final answer
    x = 12,256.24

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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.