Home / 39,975.96-55,165.94-21,826.06

Finding the Fourth Proportional to 39,975.96, 55,165.94 and 21,826.06

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Solution

The fourth proportional to 39,975.96, 55,165.94 and 21,826.06 is: 30,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975.96 : 55,165.94 = 21,826.06 : x
  2. Step 2: Convert to fraction form
    39,975.96/55,165.94 = 21,826.06/x
  3. Step 3: Cross multiply
    39,975.96x = 55,165.94 × 21,826.06
  4. Step 4: Simplify right side
    39,975.96x = 1,204,055,116.40
  5. Step 5: Solve for x
    x = 1,204,055,116.40/39,975.96
  6. Step 6: Final answer
    x = 30,119.48

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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.