Home / 39,667.35-54,744.41-21,765.86

Finding the Fourth Proportional to 39,667.35, 54,744.41 and 21,765.86

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Solution

The fourth proportional to 39,667.35, 54,744.41 and 21,765.86 is: 30,038.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,667.35 : 54,744.41 = 21,765.86 : x
  2. Step 2: Convert to fraction form
    39,667.35/54,744.41 = 21,765.86/x
  3. Step 3: Cross multiply
    39,667.35x = 54,744.41 × 21,765.86
  4. Step 4: Simplify right side
    39,667.35x = 1,191,558,781.29
  5. Step 5: Solve for x
    x = 1,191,558,781.29/39,667.35
  6. Step 6: Final answer
    x = 30,038.78

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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.