Home / 21,008.97-28,992.24-11,577.54

Finding the Fourth Proportional to 21,008.97, 28,992.24 and 11,577.54

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Solution

The fourth proportional to 21,008.97, 28,992.24 and 11,577.54 is: 15,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.97 : 28,992.24 = 11,577.54 : x
  2. Step 2: Convert to fraction form
    21,008.97/28,992.24 = 11,577.54/x
  3. Step 3: Cross multiply
    21,008.97x = 28,992.24 × 11,577.54
  4. Step 4: Simplify right side
    21,008.97x = 335,658,818.29
  5. Step 5: Solve for x
    x = 335,658,818.29/21,008.97
  6. Step 6: Final answer
    x = 15,976.93

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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.