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Finding the Fourth Proportional to 12,173.44, 16,799.64 and 7,140.88

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Solution

The fourth proportional to 12,173.44, 16,799.64 and 7,140.88 is: 9,854.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.44 : 16,799.64 = 7,140.88 : x
  2. Step 2: Convert to fraction form
    12,173.44/16,799.64 = 7,140.88/x
  3. Step 3: Cross multiply
    12,173.44x = 16,799.64 × 7,140.88
  4. Step 4: Simplify right side
    12,173.44x = 119,964,213.28
  5. Step 5: Solve for x
    x = 119,964,213.28/12,173.44
  6. Step 6: Final answer
    x = 9,854.59

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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.