Home / 21,558.76-29,751.09-12,127.33

Finding the Fourth Proportional to 21,558.76, 29,751.09 and 12,127.33

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Solution

The fourth proportional to 21,558.76, 29,751.09 and 12,127.33 is: 16,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.76 : 29,751.09 = 12,127.33 : x
  2. Step 2: Convert to fraction form
    21,558.76/29,751.09 = 12,127.33/x
  3. Step 3: Cross multiply
    21,558.76x = 29,751.09 × 12,127.33
  4. Step 4: Simplify right side
    21,558.76x = 360,801,137.53
  5. Step 5: Solve for x
    x = 360,801,137.53/21,558.76
  6. Step 6: Final answer
    x = 16,735.71

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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.