Home / 20,334.63-28,057.75-11,380.39

Finding the Fourth Proportional to 20,334.63, 28,057.75 and 11,380.39

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Solution

The fourth proportional to 20,334.63, 28,057.75 and 11,380.39 is: 15,702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.63 : 28,057.75 = 11,380.39 : x
  2. Step 2: Convert to fraction form
    20,334.63/28,057.75 = 11,380.39/x
  3. Step 3: Cross multiply
    20,334.63x = 28,057.75 × 11,380.39
  4. Step 4: Simplify right side
    20,334.63x = 319,308,137.52
  5. Step 5: Solve for x
    x = 319,308,137.52/20,334.63
  6. Step 6: Final answer
    x = 15,702.68

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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.