Home / 28,858.54-39,825.41-15,937.78

Finding the Fourth Proportional to 28,858.54, 39,825.41 and 15,937.78

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Solution

The fourth proportional to 28,858.54, 39,825.41 and 15,937.78 is: 21,994.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858.54 : 39,825.41 = 15,937.78 : x
  2. Step 2: Convert to fraction form
    28,858.54/39,825.41 = 15,937.78/x
  3. Step 3: Cross multiply
    28,858.54x = 39,825.41 × 15,937.78
  4. Step 4: Simplify right side
    28,858.54x = 634,728,622.99
  5. Step 5: Solve for x
    x = 634,728,622.99/28,858.54
  6. Step 6: Final answer
    x = 21,994.48

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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.