Home / 20,926.44-28,878.93-11,495.07

Finding the Fourth Proportional to 20,926.44, 28,878.93 and 11,495.07

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Solution

The fourth proportional to 20,926.44, 28,878.93 and 11,495.07 is: 15,863.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.44 : 28,878.93 = 11,495.07 : x
  2. Step 2: Convert to fraction form
    20,926.44/28,878.93 = 11,495.07/x
  3. Step 3: Cross multiply
    20,926.44x = 28,878.93 × 11,495.07
  4. Step 4: Simplify right side
    20,926.44x = 331,965,321.88
  5. Step 5: Solve for x
    x = 331,965,321.88/20,926.44
  6. Step 6: Final answer
    x = 15,863.44

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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.