Home / 20,671.89-28,527.12-11,240.44

Finding the Fourth Proportional to 20,671.89, 28,527.12 and 11,240.44

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Solution

The fourth proportional to 20,671.89, 28,527.12 and 11,240.44 is: 15,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.89 : 28,527.12 = 11,240.44 : x
  2. Step 2: Convert to fraction form
    20,671.89/28,527.12 = 11,240.44/x
  3. Step 3: Cross multiply
    20,671.89x = 28,527.12 × 11,240.44
  4. Step 4: Simplify right side
    20,671.89x = 320,657,380.73
  5. Step 5: Solve for x
    x = 320,657,380.73/20,671.89
  6. Step 6: Final answer
    x = 15,511.76

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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.