Home / 39,135.06-54,006.08-21,907.44

Finding the Fourth Proportional to 39,135.06, 54,006.08 and 21,907.44

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Solution

The fourth proportional to 39,135.06, 54,006.08 and 21,907.44 is: 30,232.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135.06 : 54,006.08 = 21,907.44 : x
  2. Step 2: Convert to fraction form
    39,135.06/54,006.08 = 21,907.44/x
  3. Step 3: Cross multiply
    39,135.06x = 54,006.08 × 21,907.44
  4. Step 4: Simplify right side
    39,135.06x = 1,183,134,847.70
  5. Step 5: Solve for x
    x = 1,183,134,847.70/39,135.06
  6. Step 6: Final answer
    x = 30,232.09

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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.