Home / 21,161.53-31,749.00-12,737.26

Finding the Fourth Proportional to 21,161.53, 31,749.00 and 12,737.26

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Solution

The fourth proportional to 21,161.53, 31,749.00 and 12,737.26 is: 19,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.53 : 31,749.00 = 12,737.26 : x
  2. Step 2: Convert to fraction form
    21,161.53/31,749.00 = 12,737.26/x
  3. Step 3: Cross multiply
    21,161.53x = 31,749.00 × 12,737.26
  4. Step 4: Simplify right side
    21,161.53x = 404,395,140.60
  5. Step 5: Solve for x
    x = 404,395,140.60/21,161.53
  6. Step 6: Final answer
    x = 19,109.92

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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.