Home / 28,357.97-39,131.37-16,422.08

Finding the Fourth Proportional to 28,357.97, 39,131.37 and 16,422.08

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Solution

The fourth proportional to 28,357.97, 39,131.37 and 16,422.08 is: 22,660.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.97 : 39,131.37 = 16,422.08 : x
  2. Step 2: Convert to fraction form
    28,357.97/39,131.37 = 16,422.08/x
  3. Step 3: Cross multiply
    28,357.97x = 39,131.37 × 16,422.08
  4. Step 4: Simplify right side
    28,357.97x = 642,618,292.99
  5. Step 5: Solve for x
    x = 642,618,292.99/28,357.97
  6. Step 6: Final answer
    x = 22,660.95

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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.