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Finding the Fourth Proportional to 11,953.88, 17,929.45 and 3,189.48

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Solution

The fourth proportional to 11,953.88, 17,929.45 and 3,189.48 is: 4,783.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,953.88 : 17,929.45 = 3,189.48 : x
  2. Step 2: Convert to fraction form
    11,953.88/17,929.45 = 3,189.48/x
  3. Step 3: Cross multiply
    11,953.88x = 17,929.45 × 3,189.48
  4. Step 4: Simplify right side
    11,953.88x = 57,185,558.94
  5. Step 5: Solve for x
    x = 57,185,558.94/11,953.88
  6. Step 6: Final answer
    x = 4,783.85

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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.