Home / 28,912.06-39,904.68-16,978.06

Finding the Fourth Proportional to 28,912.06, 39,904.68 and 16,978.06

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Solution

The fourth proportional to 28,912.06, 39,904.68 and 16,978.06 is: 23,433.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.06 : 39,904.68 = 16,978.06 : x
  2. Step 2: Convert to fraction form
    28,912.06/39,904.68 = 16,978.06/x
  3. Step 3: Cross multiply
    28,912.06x = 39,904.68 × 16,978.06
  4. Step 4: Simplify right side
    28,912.06x = 677,504,051.32
  5. Step 5: Solve for x
    x = 677,504,051.32/28,912.06
  6. Step 6: Final answer
    x = 23,433.27

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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.