Home / 28,858.48-39,825.84-16,920.16

Finding the Fourth Proportional to 28,858.48, 39,825.84 and 16,920.16

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Solution

The fourth proportional to 28,858.48, 39,825.84 and 16,920.16 is: 23,350.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.48 : 39,825.84 = 16,920.16 : x
  2. Step 2: Convert to fraction form
    28,858.48/39,825.84 = 16,920.16/x
  3. Step 3: Cross multiply
    28,858.48x = 39,825.84 × 16,920.16
  4. Step 4: Simplify right side
    28,858.48x = 673,859,584.93
  5. Step 5: Solve for x
    x = 673,859,584.93/28,858.48
  6. Step 6: Final answer
    x = 23,350.49

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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.