Home / 20,681.03-28,539.66-11,249.58

Finding the Fourth Proportional to 20,681.03, 28,539.66 and 11,249.58

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Solution

The fourth proportional to 20,681.03, 28,539.66 and 11,249.58 is: 15,524.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.03 : 28,539.66 = 11,249.58 : x
  2. Step 2: Convert to fraction form
    20,681.03/28,539.66 = 11,249.58/x
  3. Step 3: Cross multiply
    20,681.03x = 28,539.66 × 11,249.58
  4. Step 4: Simplify right side
    20,681.03x = 321,059,188.34
  5. Step 5: Solve for x
    x = 321,059,188.34/20,681.03
  6. Step 6: Final answer
    x = 15,524.34

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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.