Home / 39,278.21-54,202.68-21,372.75

Finding the Fourth Proportional to 39,278.21, 54,202.68 and 21,372.75

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Solution

The fourth proportional to 39,278.21, 54,202.68 and 21,372.75 is: 29,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.21 : 54,202.68 = 21,372.75 : x
  2. Step 2: Convert to fraction form
    39,278.21/54,202.68 = 21,372.75/x
  3. Step 3: Cross multiply
    39,278.21x = 54,202.68 × 21,372.75
  4. Step 4: Simplify right side
    39,278.21x = 1,158,460,328.97
  5. Step 5: Solve for x
    x = 1,158,460,328.97/39,278.21
  6. Step 6: Final answer
    x = 29,493.72

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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.