Home / 20,481.77-28,267.54-11,531.03

Finding the Fourth Proportional to 20,481.77, 28,267.54 and 11,531.03

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Solution

The fourth proportional to 20,481.77, 28,267.54 and 11,531.03 is: 15,914.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.77 : 28,267.54 = 11,531.03 : x
  2. Step 2: Convert to fraction form
    20,481.77/28,267.54 = 11,531.03/x
  3. Step 3: Cross multiply
    20,481.77x = 28,267.54 × 11,531.03
  4. Step 4: Simplify right side
    20,481.77x = 325,953,681.60
  5. Step 5: Solve for x
    x = 325,953,681.60/20,481.77
  6. Step 6: Final answer
    x = 15,914.33

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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.