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Finding the Fourth Proportional to 13,754.79, 20,643.98 and 13,651.25

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Solution

The fourth proportional to 13,754.79, 20,643.98 and 13,651.25 is: 20,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.79 : 20,643.98 = 13,651.25 : x
  2. Step 2: Convert to fraction form
    13,754.79/20,643.98 = 13,651.25/x
  3. Step 3: Cross multiply
    13,754.79x = 20,643.98 × 13,651.25
  4. Step 4: Simplify right side
    13,754.79x = 281,816,183.58
  5. Step 5: Solve for x
    x = 281,816,183.58/13,754.79
  6. Step 6: Final answer
    x = 20,488.58

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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.