Home / 39,708.14-54,797.81-21,804.75

Finding the Fourth Proportional to 39,708.14, 54,797.81 and 21,804.75

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Solution

The fourth proportional to 39,708.14, 54,797.81 and 21,804.75 is: 30,090.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708.14 : 54,797.81 = 21,804.75 : x
  2. Step 2: Convert to fraction form
    39,708.14/54,797.81 = 21,804.75/x
  3. Step 3: Cross multiply
    39,708.14x = 54,797.81 × 21,804.75
  4. Step 4: Simplify right side
    39,708.14x = 1,194,852,438.57
  5. Step 5: Solve for x
    x = 1,194,852,438.57/39,708.14
  6. Step 6: Final answer
    x = 30,090.87

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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.