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Finding the Fourth Proportional to 13,969.91, 20,968.64 and 10,261.73

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Solution

The fourth proportional to 13,969.91, 20,968.64 and 10,261.73 is: 15,402.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.91 : 20,968.64 = 10,261.73 : x
  2. Step 2: Convert to fraction form
    13,969.91/20,968.64 = 10,261.73/x
  3. Step 3: Cross multiply
    13,969.91x = 20,968.64 × 10,261.73
  4. Step 4: Simplify right side
    13,969.91x = 215,174,366.00
  5. Step 5: Solve for x
    x = 215,174,366.00/13,969.91
  6. Step 6: Final answer
    x = 15,402.71

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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.