Home / 20,756.82-28,644.74-11,325.39

Finding the Fourth Proportional to 20,756.82, 28,644.74 and 11,325.39

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Solution

The fourth proportional to 20,756.82, 28,644.74 and 11,325.39 is: 15,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.82 : 28,644.74 = 11,325.39 : x
  2. Step 2: Convert to fraction form
    20,756.82/28,644.74 = 11,325.39/x
  3. Step 3: Cross multiply
    20,756.82x = 28,644.74 × 11,325.39
  4. Step 4: Simplify right side
    20,756.82x = 324,412,795.32
  5. Step 5: Solve for x
    x = 324,412,795.32/20,756.82
  6. Step 6: Final answer
    x = 15,629.21

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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.