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Finding the Fourth Proportional to 13,765.35, 18,992.92 and 8,100.35

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Solution

The fourth proportional to 13,765.35, 18,992.92 and 8,100.35 is: 11,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.35 : 18,992.92 = 8,100.35 : x
  2. Step 2: Convert to fraction form
    13,765.35/18,992.92 = 8,100.35/x
  3. Step 3: Cross multiply
    13,765.35x = 18,992.92 × 8,100.35
  4. Step 4: Simplify right side
    13,765.35x = 153,849,299.52
  5. Step 5: Solve for x
    x = 153,849,299.52/13,765.35
  6. Step 6: Final answer
    x = 11,176.56

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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.