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Finding the Fourth Proportional to 13,651.58, 18,835.41 and 7,682.90

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Solution

The fourth proportional to 13,651.58, 18,835.41 and 7,682.90 is: 10,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.58 : 18,835.41 = 7,682.90 : x
  2. Step 2: Convert to fraction form
    13,651.58/18,835.41 = 7,682.90/x
  3. Step 3: Cross multiply
    13,651.58x = 18,835.41 × 7,682.90
  4. Step 4: Simplify right side
    13,651.58x = 144,710,571.49
  5. Step 5: Solve for x
    x = 144,710,571.49/13,651.58
  6. Step 6: Final answer
    x = 10,600.28

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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.