Home / 21,024.36-29,012.64-12,072.60

Finding the Fourth Proportional to 21,024.36, 29,012.64 and 12,072.60

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Solution

The fourth proportional to 21,024.36, 29,012.64 and 12,072.60 is: 16,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.36 : 29,012.64 = 12,072.60 : x
  2. Step 2: Convert to fraction form
    21,024.36/29,012.64 = 12,072.60/x
  3. Step 3: Cross multiply
    21,024.36x = 29,012.64 × 12,072.60
  4. Step 4: Simplify right side
    21,024.36x = 350,257,997.66
  5. Step 5: Solve for x
    x = 350,257,997.66/21,024.36
  6. Step 6: Final answer
    x = 16,659.63

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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.