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Finding the Fourth Proportional to 13,602.44, 18,766.68 and 7,633.28

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Solution

The fourth proportional to 13,602.44, 18,766.68 and 7,633.28 is: 10,531.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.44 : 18,766.68 = 7,633.28 : x
  2. Step 2: Convert to fraction form
    13,602.44/18,766.68 = 7,633.28/x
  3. Step 3: Cross multiply
    13,602.44x = 18,766.68 × 7,633.28
  4. Step 4: Simplify right side
    13,602.44x = 143,251,323.11
  5. Step 5: Solve for x
    x = 143,251,323.11/13,602.44
  6. Step 6: Final answer
    x = 10,531.30

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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.