Home / 39,813.32-54,942.64-21,907.82

Finding the Fourth Proportional to 39,813.32, 54,942.64 and 21,907.82

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Solution

The fourth proportional to 39,813.32, 54,942.64 and 21,907.82 is: 30,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,813.32 : 54,942.64 = 21,907.82 : x
  2. Step 2: Convert to fraction form
    39,813.32/54,942.64 = 21,907.82/x
  3. Step 3: Cross multiply
    39,813.32x = 54,942.64 × 21,907.82
  4. Step 4: Simplify right side
    39,813.32x = 1,203,673,467.44
  5. Step 5: Solve for x
    x = 1,203,673,467.44/39,813.32
  6. Step 6: Final answer
    x = 30,232.93

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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.