Home / 40,040.70-55,254.44-21,891.09

Finding the Fourth Proportional to 40,040.70, 55,254.44 and 21,891.09

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Solution

The fourth proportional to 40,040.70, 55,254.44 and 21,891.09 is: 30,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,040.70 : 55,254.44 = 21,891.09 : x
  2. Step 2: Convert to fraction form
    40,040.70/55,254.44 = 21,891.09/x
  3. Step 3: Cross multiply
    40,040.70x = 55,254.44 × 21,891.09
  4. Step 4: Simplify right side
    40,040.70x = 1,209,579,809.48
  5. Step 5: Solve for x
    x = 1,209,579,809.48/40,040.70
  6. Step 6: Final answer
    x = 30,208.76

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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.