Home / 21,137.58-31,683.48-13,747.34

Finding the Fourth Proportional to 21,137.58, 31,683.48 and 13,747.34

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Solution

The fourth proportional to 21,137.58, 31,683.48 and 13,747.34 is: 20,606.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.58 : 31,683.48 = 13,747.34 : x
  2. Step 2: Convert to fraction form
    21,137.58/31,683.48 = 13,747.34/x
  3. Step 3: Cross multiply
    21,137.58x = 31,683.48 × 13,747.34
  4. Step 4: Simplify right side
    21,137.58x = 435,563,571.94
  5. Step 5: Solve for x
    x = 435,563,571.94/21,137.58
  6. Step 6: Final answer
    x = 20,606.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.