Home / 28,756.82-39,684.36-16,817.69

Finding the Fourth Proportional to 28,756.82, 39,684.36 and 16,817.69

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Solution

The fourth proportional to 28,756.82, 39,684.36 and 16,817.69 is: 23,208.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,756.82 : 39,684.36 = 16,817.69 : x
  2. Step 2: Convert to fraction form
    28,756.82/39,684.36 = 16,817.69/x
  3. Step 3: Cross multiply
    28,756.82x = 39,684.36 × 16,817.69
  4. Step 4: Simplify right side
    28,756.82x = 667,399,426.61
  5. Step 5: Solve for x
    x = 667,399,426.61/28,756.82
  6. Step 6: Final answer
    x = 23,208.39

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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.