Home / 28,618.80-39,498.36-16,686

Finding the Fourth Proportional to 28,618.80, 39,498.36 and 16,686

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Solution

The fourth proportional to 28,618.80, 39,498.36 and 16,686 is: 23,029.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.80 : 39,498.36 = 16,686 : x
  2. Step 2: Convert to fraction form
    28,618.80/39,498.36 = 16,686/x
  3. Step 3: Cross multiply
    28,618.80x = 39,498.36 × 16,686
  4. Step 4: Simplify right side
    28,618.80x = 659,069,634.96
  5. Step 5: Solve for x
    x = 659,069,634.96/28,618.80
  6. Step 6: Final answer
    x = 23,029.25

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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.