Home / 39,896.90-55,058.88-21,993.06

Finding the Fourth Proportional to 39,896.90, 55,058.88 and 21,993.06

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Solution

The fourth proportional to 39,896.90, 55,058.88 and 21,993.06 is: 30,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,896.90 : 55,058.88 = 21,993.06 : x
  2. Step 2: Convert to fraction form
    39,896.90/55,058.88 = 21,993.06/x
  3. Step 3: Cross multiply
    39,896.90x = 55,058.88 × 21,993.06
  4. Step 4: Simplify right side
    39,896.90x = 1,210,913,251.37
  5. Step 5: Solve for x
    x = 1,210,913,251.37/39,896.90
  6. Step 6: Final answer
    x = 30,351.06

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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.