Home / 15,757.07-21,745.20-8,683.94

Finding the Fourth Proportional to 15,757.07, 21,745.20 and 8,683.94

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Solution

The fourth proportional to 15,757.07, 21,745.20 and 8,683.94 is: 11,984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.07 : 21,745.20 = 8,683.94 : x
  2. Step 2: Convert to fraction form
    15,757.07/21,745.20 = 8,683.94/x
  3. Step 3: Cross multiply
    15,757.07x = 21,745.20 × 8,683.94
  4. Step 4: Simplify right side
    15,757.07x = 188,834,012.09
  5. Step 5: Solve for x
    x = 188,834,012.09/15,757.07
  6. Step 6: Final answer
    x = 11,984.08

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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.