Home / 20,851.08-31,198.20-14,623.28

Finding the Fourth Proportional to 20,851.08, 31,198.20 and 14,623.28

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Solution

The fourth proportional to 20,851.08, 31,198.20 and 14,623.28 is: 21,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.08 : 31,198.20 = 14,623.28 : x
  2. Step 2: Convert to fraction form
    20,851.08/31,198.20 = 14,623.28/x
  3. Step 3: Cross multiply
    20,851.08x = 31,198.20 × 14,623.28
  4. Step 4: Simplify right side
    20,851.08x = 456,220,014.10
  5. Step 5: Solve for x
    x = 456,220,014.10/20,851.08
  6. Step 6: Final answer
    x = 21,879.92

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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.