Home / 21,027.36-29,016.78-12,075.60

Finding the Fourth Proportional to 21,027.36, 29,016.78 and 12,075.60

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Solution

The fourth proportional to 21,027.36, 29,016.78 and 12,075.60 is: 16,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.36 : 29,016.78 = 12,075.60 : x
  2. Step 2: Convert to fraction form
    21,027.36/29,016.78 = 12,075.60/x
  3. Step 3: Cross multiply
    21,027.36x = 29,016.78 × 12,075.60
  4. Step 4: Simplify right side
    21,027.36x = 350,395,028.57
  5. Step 5: Solve for x
    x = 350,395,028.57/21,027.36
  6. Step 6: Final answer
    x = 16,663.77

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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.