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Finding the Fourth Proportional to 12,216.64, 16,858.93 and 6,627.64

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Solution

The fourth proportional to 12,216.64, 16,858.93 and 6,627.64 is: 9,146.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.64 : 16,858.93 = 6,627.64 : x
  2. Step 2: Convert to fraction form
    12,216.64/16,858.93 = 6,627.64/x
  3. Step 3: Cross multiply
    12,216.64x = 16,858.93 × 6,627.64
  4. Step 4: Simplify right side
    12,216.64x = 111,734,918.83
  5. Step 5: Solve for x
    x = 111,734,918.83/12,216.64
  6. Step 6: Final answer
    x = 9,146.13

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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.