Home / 20,769.51-28,663.56-11,817.39

Finding the Fourth Proportional to 20,769.51, 28,663.56 and 11,817.39

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Solution

The fourth proportional to 20,769.51, 28,663.56 and 11,817.39 is: 16,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.51 : 28,663.56 = 11,817.39 : x
  2. Step 2: Convert to fraction form
    20,769.51/28,663.56 = 11,817.39/x
  3. Step 3: Cross multiply
    20,769.51x = 28,663.56 × 11,817.39
  4. Step 4: Simplify right side
    20,769.51x = 338,728,467.31
  5. Step 5: Solve for x
    x = 338,728,467.31/20,769.51
  6. Step 6: Final answer
    x = 16,308.93

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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.