Home / 39,185.34-54,074.28-21,279.96

Finding the Fourth Proportional to 39,185.34, 54,074.28 and 21,279.96

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Solution

The fourth proportional to 39,185.34, 54,074.28 and 21,279.96 is: 29,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,185.34 : 54,074.28 = 21,279.96 : x
  2. Step 2: Convert to fraction form
    39,185.34/54,074.28 = 21,279.96/x
  3. Step 3: Cross multiply
    39,185.34x = 54,074.28 × 21,279.96
  4. Step 4: Simplify right side
    39,185.34x = 1,150,698,515.43
  5. Step 5: Solve for x
    x = 1,150,698,515.43/39,185.34
  6. Step 6: Final answer
    x = 29,365.54

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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.