Home / 20,926.70-28,879.04-11,495.26

Finding the Fourth Proportional to 20,926.70, 28,879.04 and 11,495.26

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Solution

The fourth proportional to 20,926.70, 28,879.04 and 11,495.26 is: 15,863.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.70 : 28,879.04 = 11,495.26 : x
  2. Step 2: Convert to fraction form
    20,926.70/28,879.04 = 11,495.26/x
  3. Step 3: Cross multiply
    20,926.70x = 28,879.04 × 11,495.26
  4. Step 4: Simplify right side
    20,926.70x = 331,971,871.48
  5. Step 5: Solve for x
    x = 331,971,871.48/20,926.70
  6. Step 6: Final answer
    x = 15,863.56

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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.