Home / 21,029.03-29,020.73-12,078.35

Finding the Fourth Proportional to 21,029.03, 29,020.73 and 12,078.35

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Solution

The fourth proportional to 21,029.03, 29,020.73 and 12,078.35 is: 16,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.03 : 29,020.73 = 12,078.35 : x
  2. Step 2: Convert to fraction form
    21,029.03/29,020.73 = 12,078.35/x
  3. Step 3: Cross multiply
    21,029.03x = 29,020.73 × 12,078.35
  4. Step 4: Simplify right side
    21,029.03x = 350,522,534.20
  5. Step 5: Solve for x
    x = 350,522,534.20/21,029.03
  6. Step 6: Final answer
    x = 16,668.51

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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.