Home / 39,806.40-54,933.69-21,903.06

Finding the Fourth Proportional to 39,806.40, 54,933.69 and 21,903.06

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Solution

The fourth proportional to 39,806.40, 54,933.69 and 21,903.06 is: 30,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.40 : 54,933.69 = 21,903.06 : x
  2. Step 2: Convert to fraction form
    39,806.40/54,933.69 = 21,903.06/x
  3. Step 3: Cross multiply
    39,806.40x = 54,933.69 × 21,903.06
  4. Step 4: Simplify right side
    39,806.40x = 1,203,215,908.09
  5. Step 5: Solve for x
    x = 1,203,215,908.09/39,806.40
  6. Step 6: Final answer
    x = 30,226.69

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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.