Home / 20,646.96-28,494.56-11,696.06

Finding the Fourth Proportional to 20,646.96, 28,494.56 and 11,696.06

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Solution

The fourth proportional to 20,646.96, 28,494.56 and 11,696.06 is: 16,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.96 : 28,494.56 = 11,696.06 : x
  2. Step 2: Convert to fraction form
    20,646.96/28,494.56 = 11,696.06/x
  3. Step 3: Cross multiply
    20,646.96x = 28,494.56 × 11,696.06
  4. Step 4: Simplify right side
    20,646.96x = 333,274,083.43
  5. Step 5: Solve for x
    x = 333,274,083.43/20,646.96
  6. Step 6: Final answer
    x = 16,141.56

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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.