Home / 21,683.56-29,923.32-11,747.56

Finding the Fourth Proportional to 21,683.56, 29,923.32 and 11,747.56

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Solution

The fourth proportional to 21,683.56, 29,923.32 and 11,747.56 is: 16,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,683.56 : 29,923.32 = 11,747.56 : x
  2. Step 2: Convert to fraction form
    21,683.56/29,923.32 = 11,747.56/x
  3. Step 3: Cross multiply
    21,683.56x = 29,923.32 × 11,747.56
  4. Step 4: Simplify right side
    21,683.56x = 351,525,997.10
  5. Step 5: Solve for x
    x = 351,525,997.10/21,683.56
  6. Step 6: Final answer
    x = 16,211.64

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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.