Home / 30,185.58-41,673.78-20,128.08

Finding the Fourth Proportional to 30,185.58, 41,673.78 and 20,128.08

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Solution

The fourth proportional to 30,185.58, 41,673.78 and 20,128.08 is: 27,788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,185.58 : 41,673.78 = 20,128.08 : x
  2. Step 2: Convert to fraction form
    30,185.58/41,673.78 = 20,128.08/x
  3. Step 3: Cross multiply
    30,185.58x = 41,673.78 × 20,128.08
  4. Step 4: Simplify right side
    30,185.58x = 838,813,177.74
  5. Step 5: Solve for x
    x = 838,813,177.74/30,185.58
  6. Step 6: Final answer
    x = 27,788.54

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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.