Home / 20,879.06-31,318.58-6,087.65

Finding the Fourth Proportional to 20,879.06, 31,318.58 and 6,087.65

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Solution

The fourth proportional to 20,879.06, 31,318.58 and 6,087.65 is: 9,131.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.06 : 31,318.58 = 6,087.65 : x
  2. Step 2: Convert to fraction form
    20,879.06/31,318.58 = 6,087.65/x
  3. Step 3: Cross multiply
    20,879.06x = 31,318.58 × 6,087.65
  4. Step 4: Simplify right side
    20,879.06x = 190,656,366.51
  5. Step 5: Solve for x
    x = 190,656,366.51/20,879.06
  6. Step 6: Final answer
    x = 9,131.47

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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.