Home / 21,558.82-29,751.06-12,127.36

Finding the Fourth Proportional to 21,558.82, 29,751.06 and 12,127.36

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Solution

The fourth proportional to 21,558.82, 29,751.06 and 12,127.36 is: 16,735.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.82 : 29,751.06 = 12,127.36 : x
  2. Step 2: Convert to fraction form
    21,558.82/29,751.06 = 12,127.36/x
  3. Step 3: Cross multiply
    21,558.82x = 29,751.06 × 12,127.36
  4. Step 4: Simplify right side
    21,558.82x = 360,801,815.00
  5. Step 5: Solve for x
    x = 360,801,815.00/21,558.82
  6. Step 6: Final answer
    x = 16,735.69

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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.