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Finding the Fourth Proportional to 13,339.87, 18,406.44 and 8,035.03

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Solution

The fourth proportional to 13,339.87, 18,406.44 and 8,035.03 is: 11,086.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.87 : 18,406.44 = 8,035.03 : x
  2. Step 2: Convert to fraction form
    13,339.87/18,406.44 = 8,035.03/x
  3. Step 3: Cross multiply
    13,339.87x = 18,406.44 × 8,035.03
  4. Step 4: Simplify right side
    13,339.87x = 147,896,297.59
  5. Step 5: Solve for x
    x = 147,896,297.59/13,339.87
  6. Step 6: Final answer
    x = 11,086.79

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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.