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Finding the Fourth Proportional to 13,149.96, 18,145.39 and 7,483.97

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Solution

The fourth proportional to 13,149.96, 18,145.39 and 7,483.97 is: 10,326.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.96 : 18,145.39 = 7,483.97 : x
  2. Step 2: Convert to fraction form
    13,149.96/18,145.39 = 7,483.97/x
  3. Step 3: Cross multiply
    13,149.96x = 18,145.39 × 7,483.97
  4. Step 4: Simplify right side
    13,149.96x = 135,799,426.25
  5. Step 5: Solve for x
    x = 135,799,426.25/13,149.96
  6. Step 6: Final answer
    x = 10,326.98

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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.