Home / 20,926.94-28,879.38-11,495.51

Finding the Fourth Proportional to 20,926.94, 28,879.38 and 11,495.51

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Solution

The fourth proportional to 20,926.94, 28,879.38 and 11,495.51 is: 15,863.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.94 : 28,879.38 = 11,495.51 : x
  2. Step 2: Convert to fraction form
    20,926.94/28,879.38 = 11,495.51/x
  3. Step 3: Cross multiply
    20,926.94x = 28,879.38 × 11,495.51
  4. Step 4: Simplify right side
    20,926.94x = 331,983,057.19
  5. Step 5: Solve for x
    x = 331,983,057.19/20,926.94
  6. Step 6: Final answer
    x = 15,863.91

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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.