Home / 39,183.40-54,072.61-21,278.53

Finding the Fourth Proportional to 39,183.40, 54,072.61 and 21,278.53

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Solution

The fourth proportional to 39,183.40, 54,072.61 and 21,278.53 is: 29,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,183.40 : 54,072.61 = 21,278.53 : x
  2. Step 2: Convert to fraction form
    39,183.40/54,072.61 = 21,278.53/x
  3. Step 3: Cross multiply
    39,183.40x = 54,072.61 × 21,278.53
  4. Step 4: Simplify right side
    39,183.40x = 1,150,585,788.15
  5. Step 5: Solve for x
    x = 1,150,585,788.15/39,183.40
  6. Step 6: Final answer
    x = 29,364.12

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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.