Home / 21,008.97-28,992.32-11,577.53

Finding the Fourth Proportional to 21,008.97, 28,992.32 and 11,577.53

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Solution

The fourth proportional to 21,008.97, 28,992.32 and 11,577.53 is: 15,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.97 : 28,992.32 = 11,577.53 : x
  2. Step 2: Convert to fraction form
    21,008.97/28,992.32 = 11,577.53/x
  3. Step 3: Cross multiply
    21,008.97x = 28,992.32 × 11,577.53
  4. Step 4: Simplify right side
    21,008.97x = 335,659,454.57
  5. Step 5: Solve for x
    x = 335,659,454.57/21,008.97
  6. Step 6: Final answer
    x = 15,976.96

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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.