Home / 39,679.42-54,755.72-21,774.04

Finding the Fourth Proportional to 39,679.42, 54,755.72 and 21,774.04

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Solution

The fourth proportional to 39,679.42, 54,755.72 and 21,774.04 is: 30,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.42 : 54,755.72 = 21,774.04 : x
  2. Step 2: Convert to fraction form
    39,679.42/54,755.72 = 21,774.04/x
  3. Step 3: Cross multiply
    39,679.42x = 54,755.72 × 21,774.04
  4. Step 4: Simplify right side
    39,679.42x = 1,192,253,237.51
  5. Step 5: Solve for x
    x = 1,192,253,237.51/39,679.42
  6. Step 6: Final answer
    x = 30,047.14

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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.