Home / 39,901.41-55,063.75-21,996.36

Finding the Fourth Proportional to 39,901.41, 55,063.75 and 21,996.36

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Solution

The fourth proportional to 39,901.41, 55,063.75 and 21,996.36 is: 30,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,901.41 : 55,063.75 = 21,996.36 : x
  2. Step 2: Convert to fraction form
    39,901.41/55,063.75 = 21,996.36/x
  3. Step 3: Cross multiply
    39,901.41x = 55,063.75 × 21,996.36
  4. Step 4: Simplify right side
    39,901.41x = 1,211,202,054.20
  5. Step 5: Solve for x
    x = 1,211,202,054.20/39,901.41
  6. Step 6: Final answer
    x = 30,354.87

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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.