Home / 28,685.94-43,028.70-16,990.75

Finding the Fourth Proportional to 28,685.94, 43,028.70 and 16,990.75

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Solution

The fourth proportional to 28,685.94, 43,028.70 and 16,990.75 is: 25,486.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.94 : 43,028.70 = 16,990.75 : x
  2. Step 2: Convert to fraction form
    28,685.94/43,028.70 = 16,990.75/x
  3. Step 3: Cross multiply
    28,685.94x = 43,028.70 × 16,990.75
  4. Step 4: Simplify right side
    28,685.94x = 731,089,884.53
  5. Step 5: Solve for x
    x = 731,089,884.53/28,685.94
  6. Step 6: Final answer
    x = 25,486.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.