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Finding the Fourth Proportional to 12,467.51, 18,654.78 and 7,472.64

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Solution

The fourth proportional to 12,467.51, 18,654.78 and 7,472.64 is: 11,181.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467.51 : 18,654.78 = 7,472.64 : x
  2. Step 2: Convert to fraction form
    12,467.51/18,654.78 = 7,472.64/x
  3. Step 3: Cross multiply
    12,467.51x = 18,654.78 × 7,472.64
  4. Step 4: Simplify right side
    12,467.51x = 139,400,455.22
  5. Step 5: Solve for x
    x = 139,400,455.22/12,467.51
  6. Step 6: Final answer
    x = 11,181.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.