Home / 20,740.21-28,622.87-11,787.73

Finding the Fourth Proportional to 20,740.21, 28,622.87 and 11,787.73

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Solution

The fourth proportional to 20,740.21, 28,622.87 and 11,787.73 is: 16,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.21 : 28,622.87 = 11,787.73 : x
  2. Step 2: Convert to fraction form
    20,740.21/28,622.87 = 11,787.73/x
  3. Step 3: Cross multiply
    20,740.21x = 28,622.87 × 11,787.73
  4. Step 4: Simplify right side
    20,740.21x = 337,398,663.39
  5. Step 5: Solve for x
    x = 337,398,663.39/20,740.21
  6. Step 6: Final answer
    x = 16,267.85

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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.