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Finding the Fourth Proportional to 13,035.88, 17,989.86 and 7,371.64

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Solution

The fourth proportional to 13,035.88, 17,989.86 and 7,371.64 is: 10,173.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,035.88 : 17,989.86 = 7,371.64 : x
  2. Step 2: Convert to fraction form
    13,035.88/17,989.86 = 7,371.64/x
  3. Step 3: Cross multiply
    13,035.88x = 17,989.86 × 7,371.64
  4. Step 4: Simplify right side
    13,035.88x = 132,614,771.57
  5. Step 5: Solve for x
    x = 132,614,771.57/13,035.88
  6. Step 6: Final answer
    x = 10,173.06

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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.