Home / 39,977.22-55,168.69-21,827.98

Finding the Fourth Proportional to 39,977.22, 55,168.69 and 21,827.98

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Solution

The fourth proportional to 39,977.22, 55,168.69 and 21,827.98 is: 30,122.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,977.22 : 55,168.69 = 21,827.98 : x
  2. Step 2: Convert to fraction form
    39,977.22/55,168.69 = 21,827.98/x
  3. Step 3: Cross multiply
    39,977.22x = 55,168.69 × 21,827.98
  4. Step 4: Simplify right side
    39,977.22x = 1,204,221,055.87
  5. Step 5: Solve for x
    x = 1,204,221,055.87/39,977.22
  6. Step 6: Final answer
    x = 30,122.68

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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.