Home / 28,443.24-39,222.54-18,879.75

Finding the Fourth Proportional to 28,443.24, 39,222.54 and 18,879.75

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Solution

The fourth proportional to 28,443.24, 39,222.54 and 18,879.75 is: 26,034.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.24 : 39,222.54 = 18,879.75 : x
  2. Step 2: Convert to fraction form
    28,443.24/39,222.54 = 18,879.75/x
  3. Step 3: Cross multiply
    28,443.24x = 39,222.54 × 18,879.75
  4. Step 4: Simplify right side
    28,443.24x = 740,511,749.57
  5. Step 5: Solve for x
    x = 740,511,749.57/28,443.24
  6. Step 6: Final answer
    x = 26,034.72

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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.