Home / 39,897.82-55,058.97-21,993.12

Finding the Fourth Proportional to 39,897.82, 55,058.97 and 21,993.12

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Solution

The fourth proportional to 39,897.82, 55,058.97 and 21,993.12 is: 30,350.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.82 : 55,058.97 = 21,993.12 : x
  2. Step 2: Convert to fraction form
    39,897.82/55,058.97 = 21,993.12/x
  3. Step 3: Cross multiply
    39,897.82x = 55,058.97 × 21,993.12
  4. Step 4: Simplify right side
    39,897.82x = 1,210,918,534.29
  5. Step 5: Solve for x
    x = 1,210,918,534.29/39,897.82
  6. Step 6: Final answer
    x = 30,350.50

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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.