Home / 28,879.51-39,849.79-16,131.07

Finding the Fourth Proportional to 28,879.51, 39,849.79 and 16,131.07

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Solution

The fourth proportional to 28,879.51, 39,849.79 and 16,131.07 is: 22,258.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.51 : 39,849.79 = 16,131.07 : x
  2. Step 2: Convert to fraction form
    28,879.51/39,849.79 = 16,131.07/x
  3. Step 3: Cross multiply
    28,879.51x = 39,849.79 × 16,131.07
  4. Step 4: Simplify right side
    28,879.51x = 642,819,711.65
  5. Step 5: Solve for x
    x = 642,819,711.65/28,879.51
  6. Step 6: Final answer
    x = 22,258.68

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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.