Home / 39,864.96-55,014.26-21,959.78

Finding the Fourth Proportional to 39,864.96, 55,014.26 and 21,959.78

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Solution

The fourth proportional to 39,864.96, 55,014.26 and 21,959.78 is: 30,304.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,864.96 : 55,014.26 = 21,959.78 : x
  2. Step 2: Convert to fraction form
    39,864.96/55,014.26 = 21,959.78/x
  3. Step 3: Cross multiply
    39,864.96x = 55,014.26 × 21,959.78
  4. Step 4: Simplify right side
    39,864.96x = 1,208,100,661.59
  5. Step 5: Solve for x
    x = 1,208,100,661.59/39,864.96
  6. Step 6: Final answer
    x = 30,304.83

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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.