Home / 20,267.48-30,380.43-7,784.15

Finding the Fourth Proportional to 20,267.48, 30,380.43 and 7,784.15

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Solution

The fourth proportional to 20,267.48, 30,380.43 and 7,784.15 is: 11,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.48 : 30,380.43 = 7,784.15 : x
  2. Step 2: Convert to fraction form
    20,267.48/30,380.43 = 7,784.15/x
  3. Step 3: Cross multiply
    20,267.48x = 30,380.43 × 7,784.15
  4. Step 4: Simplify right side
    20,267.48x = 236,485,672.28
  5. Step 5: Solve for x
    x = 236,485,672.28/20,267.48
  6. Step 6: Final answer
    x = 11,668.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.