Home / 39,788.08-54,907.57-21,884.30

Finding the Fourth Proportional to 39,788.08, 54,907.57 and 21,884.30

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Solution

The fourth proportional to 39,788.08, 54,907.57 and 21,884.30 is: 30,200.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,788.08 : 54,907.57 = 21,884.30 : x
  2. Step 2: Convert to fraction form
    39,788.08/54,907.57 = 21,884.30/x
  3. Step 3: Cross multiply
    39,788.08x = 54,907.57 × 21,884.30
  4. Step 4: Simplify right side
    39,788.08x = 1,201,613,734.15
  5. Step 5: Solve for x
    x = 1,201,613,734.15/39,788.08
  6. Step 6: Final answer
    x = 30,200.34

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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.