Home / 28,879.68-39,876.48-22,609.92

Finding the Fourth Proportional to 28,879.68, 39,876.48 and 22,609.92

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Solution

The fourth proportional to 28,879.68, 39,876.48 and 22,609.92 is: 31,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.68 : 39,876.48 = 22,609.92 : x
  2. Step 2: Convert to fraction form
    28,879.68/39,876.48 = 22,609.92/x
  3. Step 3: Cross multiply
    28,879.68x = 39,876.48 × 22,609.92
  4. Step 4: Simplify right side
    28,879.68x = 901,604,022.68
  5. Step 5: Solve for x
    x = 901,604,022.68/28,879.68
  6. Step 6: Final answer
    x = 31,219.32

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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.