Home / 39,394.35-54,362.21-21,489.21

Finding the Fourth Proportional to 39,394.35, 54,362.21 and 21,489.21

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Solution

The fourth proportional to 39,394.35, 54,362.21 and 21,489.21 is: 29,654.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,394.35 : 54,362.21 = 21,489.21 : x
  2. Step 2: Convert to fraction form
    39,394.35/54,362.21 = 21,489.21/x
  3. Step 3: Cross multiply
    39,394.35x = 54,362.21 × 21,489.21
  4. Step 4: Simplify right side
    39,394.35x = 1,168,200,839.31
  5. Step 5: Solve for x
    x = 1,168,200,839.31/39,394.35
  6. Step 6: Final answer
    x = 29,654.02

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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.