Home / 20,837.09-28,754.08-11,403.83

Finding the Fourth Proportional to 20,837.09, 28,754.08 and 11,403.83

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Solution

The fourth proportional to 20,837.09, 28,754.08 and 11,403.83 is: 15,736.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.09 : 28,754.08 = 11,403.83 : x
  2. Step 2: Convert to fraction form
    20,837.09/28,754.08 = 11,403.83/x
  3. Step 3: Cross multiply
    20,837.09x = 28,754.08 × 11,403.83
  4. Step 4: Simplify right side
    20,837.09x = 327,906,640.13
  5. Step 5: Solve for x
    x = 327,906,640.13/20,837.09
  6. Step 6: Final answer
    x = 15,736.68

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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.