Home / 20,481.48-28,264.80-11,984.28

Finding the Fourth Proportional to 20,481.48, 28,264.80 and 11,984.28

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Solution

The fourth proportional to 20,481.48, 28,264.80 and 11,984.28 is: 16,538.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.48 : 28,264.80 = 11,984.28 : x
  2. Step 2: Convert to fraction form
    20,481.48/28,264.80 = 11,984.28/x
  3. Step 3: Cross multiply
    20,481.48x = 28,264.80 × 11,984.28
  4. Step 4: Simplify right side
    20,481.48x = 338,733,277.34
  5. Step 5: Solve for x
    x = 338,733,277.34/20,481.48
  6. Step 6: Final answer
    x = 16,538.52

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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.