Home / 39,670.38-54,745.19-21,765.51

Finding the Fourth Proportional to 39,670.38, 54,745.19 and 21,765.51

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Solution

The fourth proportional to 39,670.38, 54,745.19 and 21,765.51 is: 30,036.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.38 : 54,745.19 = 21,765.51 : x
  2. Step 2: Convert to fraction form
    39,670.38/54,745.19 = 21,765.51/x
  3. Step 3: Cross multiply
    39,670.38x = 54,745.19 × 21,765.51
  4. Step 4: Simplify right side
    39,670.38x = 1,191,556,597.84
  5. Step 5: Solve for x
    x = 1,191,556,597.84/39,670.38
  6. Step 6: Final answer
    x = 30,036.43

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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.