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Finding the Fourth Proportional to 11,203.88, 16,745.34 and 9,787.18

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Solution

The fourth proportional to 11,203.88, 16,745.34 and 9,787.18 is: 14,627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,203.88 : 16,745.34 = 9,787.18 : x
  2. Step 2: Convert to fraction form
    11,203.88/16,745.34 = 9,787.18/x
  3. Step 3: Cross multiply
    11,203.88x = 16,745.34 × 9,787.18
  4. Step 4: Simplify right side
    11,203.88x = 163,889,656.74
  5. Step 5: Solve for x
    x = 163,889,656.74/11,203.88
  6. Step 6: Final answer
    x = 14,627.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.