Home / 21,076.16-31,647.12-20,141.36

Finding the Fourth Proportional to 21,076.16, 31,647.12 and 20,141.36

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Solution

The fourth proportional to 21,076.16, 31,647.12 and 20,141.36 is: 30,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.16 : 31,647.12 = 20,141.36 : x
  2. Step 2: Convert to fraction form
    21,076.16/31,647.12 = 20,141.36/x
  3. Step 3: Cross multiply
    21,076.16x = 31,647.12 × 20,141.36
  4. Step 4: Simplify right side
    21,076.16x = 637,416,036.88
  5. Step 5: Solve for x
    x = 637,416,036.88/21,076.16
  6. Step 6: Final answer
    x = 30,243.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.