Home / 21,009.27-28,992.52-11,449.57

Finding the Fourth Proportional to 21,009.27, 28,992.52 and 11,449.57

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Solution

The fourth proportional to 21,009.27, 28,992.52 and 11,449.57 is: 15,800.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.27 : 28,992.52 = 11,449.57 : x
  2. Step 2: Convert to fraction form
    21,009.27/28,992.52 = 11,449.57/x
  3. Step 3: Cross multiply
    21,009.27x = 28,992.52 × 11,449.57
  4. Step 4: Simplify right side
    21,009.27x = 331,951,887.22
  5. Step 5: Solve for x
    x = 331,951,887.22/21,009.27
  6. Step 6: Final answer
    x = 15,800.26

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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.