Home / 39,795.39-54,917.19-21,890.64

Finding the Fourth Proportional to 39,795.39, 54,917.19 and 21,890.64

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Solution

The fourth proportional to 39,795.39, 54,917.19 and 21,890.64 is: 30,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.39 : 54,917.19 = 21,890.64 : x
  2. Step 2: Convert to fraction form
    39,795.39/54,917.19 = 21,890.64/x
  3. Step 3: Cross multiply
    39,795.39x = 54,917.19 × 21,890.64
  4. Step 4: Simplify right side
    39,795.39x = 1,202,172,436.10
  5. Step 5: Solve for x
    x = 1,202,172,436.10/39,795.39
  6. Step 6: Final answer
    x = 30,208.84

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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.