Home / 20,756.98-28,647.06-11,805.82

Finding the Fourth Proportional to 20,756.98, 28,647.06 and 11,805.82

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Solution

The fourth proportional to 20,756.98, 28,647.06 and 11,805.82 is: 16,293.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.98 : 28,647.06 = 11,805.82 : x
  2. Step 2: Convert to fraction form
    20,756.98/28,647.06 = 11,805.82/x
  3. Step 3: Cross multiply
    20,756.98x = 28,647.06 × 11,805.82
  4. Step 4: Simplify right side
    20,756.98x = 338,202,033.89
  5. Step 5: Solve for x
    x = 338,202,033.89/20,756.98
  6. Step 6: Final answer
    x = 16,293.41

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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.