Home / 20,679.03-28,536.30-11,247.39

Finding the Fourth Proportional to 20,679.03, 28,536.30 and 11,247.39

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Solution

The fourth proportional to 20,679.03, 28,536.30 and 11,247.39 is: 15,520.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.03 : 28,536.30 = 11,247.39 : x
  2. Step 2: Convert to fraction form
    20,679.03/28,536.30 = 11,247.39/x
  3. Step 3: Cross multiply
    20,679.03x = 28,536.30 × 11,247.39
  4. Step 4: Simplify right side
    20,679.03x = 320,958,895.26
  5. Step 5: Solve for x
    x = 320,958,895.26/20,679.03
  6. Step 6: Final answer
    x = 15,520.98

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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.