Home / 21,028.36-29,018.16-12,076.60

Finding the Fourth Proportional to 21,028.36, 29,018.16 and 12,076.60

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Solution

The fourth proportional to 21,028.36, 29,018.16 and 12,076.60 is: 16,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.36 : 29,018.16 = 12,076.60 : x
  2. Step 2: Convert to fraction form
    21,028.36/29,018.16 = 12,076.60/x
  3. Step 3: Cross multiply
    21,028.36x = 29,018.16 × 12,076.60
  4. Step 4: Simplify right side
    21,028.36x = 350,440,711.06
  5. Step 5: Solve for x
    x = 350,440,711.06/21,028.36
  6. Step 6: Final answer
    x = 16,665.15

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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.