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Finding the Fourth Proportional to 13,286.88, 19,932.48 and 4,520.88

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Solution

The fourth proportional to 13,286.88, 19,932.48 and 4,520.88 is: 6,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.88 : 19,932.48 = 4,520.88 : x
  2. Step 2: Convert to fraction form
    13,286.88/19,932.48 = 4,520.88/x
  3. Step 3: Cross multiply
    13,286.88x = 19,932.48 × 4,520.88
  4. Step 4: Simplify right side
    13,286.88x = 90,112,350.18
  5. Step 5: Solve for x
    x = 90,112,350.18/13,286.88
  6. Step 6: Final answer
    x = 6,782.05

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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.