Home / 38,990.36-53,806.03-21,994.64

Finding the Fourth Proportional to 38,990.36, 53,806.03 and 21,994.64

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Solution

The fourth proportional to 38,990.36, 53,806.03 and 21,994.64 is: 30,352.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.36 : 53,806.03 = 21,994.64 : x
  2. Step 2: Convert to fraction form
    38,990.36/53,806.03 = 21,994.64/x
  3. Step 3: Cross multiply
    38,990.36x = 53,806.03 × 21,994.64
  4. Step 4: Simplify right side
    38,990.36x = 1,183,444,259.68
  5. Step 5: Solve for x
    x = 1,183,444,259.68/38,990.36
  6. Step 6: Final answer
    x = 30,352.23

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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.