Home / 39,679.03-54,756.89-21,774.33

Finding the Fourth Proportional to 39,679.03, 54,756.89 and 21,774.33

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Solution

The fourth proportional to 39,679.03, 54,756.89 and 21,774.33 is: 30,048.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.03 : 54,756.89 = 21,774.33 : x
  2. Step 2: Convert to fraction form
    39,679.03/54,756.89 = 21,774.33/x
  3. Step 3: Cross multiply
    39,679.03x = 54,756.89 × 21,774.33
  4. Step 4: Simplify right side
    39,679.03x = 1,192,294,687.90
  5. Step 5: Solve for x
    x = 1,192,294,687.90/39,679.03
  6. Step 6: Final answer
    x = 30,048.49

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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.