Home / 21,211.74-31,806.32-6,416.69

Finding the Fourth Proportional to 21,211.74, 31,806.32 and 6,416.69

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Solution

The fourth proportional to 21,211.74, 31,806.32 and 6,416.69 is: 9,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.74 : 31,806.32 = 6,416.69 : x
  2. Step 2: Convert to fraction form
    21,211.74/31,806.32 = 6,416.69/x
  3. Step 3: Cross multiply
    21,211.74x = 31,806.32 × 6,416.69
  4. Step 4: Simplify right side
    21,211.74x = 204,091,104.37
  5. Step 5: Solve for x
    x = 204,091,104.37/21,211.74
  6. Step 6: Final answer
    x = 9,621.61

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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.