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Finding the Fourth Proportional to 12,669.60, 19,005.60 and 5,273.88

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Solution

The fourth proportional to 12,669.60, 19,005.60 and 5,273.88 is: 7,911.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,669.60 : 19,005.60 = 5,273.88 : x
  2. Step 2: Convert to fraction form
    12,669.60/19,005.60 = 5,273.88/x
  3. Step 3: Cross multiply
    12,669.60x = 19,005.60 × 5,273.88
  4. Step 4: Simplify right side
    12,669.60x = 100,233,253.73
  5. Step 5: Solve for x
    x = 100,233,253.73/12,669.60
  6. Step 6: Final answer
    x = 7,911.32

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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.