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Finding the Fourth Proportional to 15,063.49, 20,787.18 and 8,257.37

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Solution

The fourth proportional to 15,063.49, 20,787.18 and 8,257.37 is: 11,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,063.49 : 20,787.18 = 8,257.37 : x
  2. Step 2: Convert to fraction form
    15,063.49/20,787.18 = 8,257.37/x
  3. Step 3: Cross multiply
    15,063.49x = 20,787.18 × 8,257.37
  4. Step 4: Simplify right side
    15,063.49x = 171,647,488.48
  5. Step 5: Solve for x
    x = 171,647,488.48/15,063.49
  6. Step 6: Final answer
    x = 11,394.93

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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.