Home / 39,718.37-54,811.73-21,813.75

Finding the Fourth Proportional to 39,718.37, 54,811.73 and 21,813.75

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Solution

The fourth proportional to 39,718.37, 54,811.73 and 21,813.75 is: 30,103.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.37 : 54,811.73 = 21,813.75 : x
  2. Step 2: Convert to fraction form
    39,718.37/54,811.73 = 21,813.75/x
  3. Step 3: Cross multiply
    39,718.37x = 54,811.73 × 21,813.75
  4. Step 4: Simplify right side
    39,718.37x = 1,195,649,429.82
  5. Step 5: Solve for x
    x = 1,195,649,429.82/39,718.37
  6. Step 6: Final answer
    x = 30,103.18

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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.