Home / 21,993.06-30,355.38-18,450.12

Finding the Fourth Proportional to 21,993.06, 30,355.38 and 18,450.12

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Solution

The fourth proportional to 21,993.06, 30,355.38 and 18,450.12 is: 25,465.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.06 : 30,355.38 = 18,450.12 : x
  2. Step 2: Convert to fraction form
    21,993.06/30,355.38 = 18,450.12/x
  3. Step 3: Cross multiply
    21,993.06x = 30,355.38 × 18,450.12
  4. Step 4: Simplify right side
    21,993.06x = 560,060,403.65
  5. Step 5: Solve for x
    x = 560,060,403.65/21,993.06
  6. Step 6: Final answer
    x = 25,465.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.