Home / 20,811.06-31,215.67-6,019.65

Finding the Fourth Proportional to 20,811.06, 31,215.67 and 6,019.65

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Solution

The fourth proportional to 20,811.06, 31,215.67 and 6,019.65 is: 9,029.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.06 : 31,215.67 = 6,019.65 : x
  2. Step 2: Convert to fraction form
    20,811.06/31,215.67 = 6,019.65/x
  3. Step 3: Cross multiply
    20,811.06x = 31,215.67 × 6,019.65
  4. Step 4: Simplify right side
    20,811.06x = 187,907,407.92
  5. Step 5: Solve for x
    x = 187,907,407.92/20,811.06
  6. Step 6: Final answer
    x = 9,029.21

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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.