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Finding the Fourth Proportional to 13,745.52, 18,942.66 and 9,962.10

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Solution

The fourth proportional to 13,745.52, 18,942.66 and 9,962.10 is: 13,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.52 : 18,942.66 = 9,962.10 : x
  2. Step 2: Convert to fraction form
    13,745.52/18,942.66 = 9,962.10/x
  3. Step 3: Cross multiply
    13,745.52x = 18,942.66 × 9,962.10
  4. Step 4: Simplify right side
    13,745.52x = 188,708,673.19
  5. Step 5: Solve for x
    x = 188,708,673.19/13,745.52
  6. Step 6: Final answer
    x = 13,728.74

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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.