Home / 21,787.14-30,072.60-14,234.62

Finding the Fourth Proportional to 21,787.14, 30,072.60 and 14,234.62

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Solution

The fourth proportional to 21,787.14, 30,072.60 and 14,234.62 is: 19,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.14 : 30,072.60 = 14,234.62 : x
  2. Step 2: Convert to fraction form
    21,787.14/30,072.60 = 14,234.62/x
  3. Step 3: Cross multiply
    21,787.14x = 30,072.60 × 14,234.62
  4. Step 4: Simplify right side
    21,787.14x = 428,072,033.41
  5. Step 5: Solve for x
    x = 428,072,033.41/21,787.14
  6. Step 6: Final answer
    x = 19,647.92

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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.