Home / 26,578.80-39,803.40-12,711.60

Finding the Fourth Proportional to 26,578.80, 39,803.40 and 12,711.60

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Solution

The fourth proportional to 26,578.80, 39,803.40 and 12,711.60 is: 19,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,578.80 : 39,803.40 = 12,711.60 : x
  2. Step 2: Convert to fraction form
    26,578.80/39,803.40 = 12,711.60/x
  3. Step 3: Cross multiply
    26,578.80x = 39,803.40 × 12,711.60
  4. Step 4: Simplify right side
    26,578.80x = 505,964,899.44
  5. Step 5: Solve for x
    x = 505,964,899.44/26,578.80
  6. Step 6: Final answer
    x = 19,036.41

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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.