Home / 15,745.42-21,729.87-8,673.07

Finding the Fourth Proportional to 15,745.42, 21,729.87 and 8,673.07

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Solution

The fourth proportional to 15,745.42, 21,729.87 and 8,673.07 is: 11,969.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.42 : 21,729.87 = 8,673.07 : x
  2. Step 2: Convert to fraction form
    15,745.42/21,729.87 = 8,673.07/x
  3. Step 3: Cross multiply
    15,745.42x = 21,729.87 × 8,673.07
  4. Step 4: Simplify right side
    15,745.42x = 188,464,683.60
  5. Step 5: Solve for x
    x = 188,464,683.60/15,745.42
  6. Step 6: Final answer
    x = 11,969.49

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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.