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Finding the Fourth Proportional to 14,825.76, 20,450.64 and 9,789.99

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Solution

The fourth proportional to 14,825.76, 20,450.64 and 9,789.99 is: 13,504.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,825.76 : 20,450.64 = 9,789.99 : x
  2. Step 2: Convert to fraction form
    14,825.76/20,450.64 = 9,789.99/x
  3. Step 3: Cross multiply
    14,825.76x = 20,450.64 × 9,789.99
  4. Step 4: Simplify right side
    14,825.76x = 200,211,561.09
  5. Step 5: Solve for x
    x = 200,211,561.09/14,825.76
  6. Step 6: Final answer
    x = 13,504.30

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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.