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Finding the Fourth Proportional to 12,465.11, 18,667.94 and 7,189.02

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Solution

The fourth proportional to 12,465.11, 18,667.94 and 7,189.02 is: 10,766.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.11 : 18,667.94 = 7,189.02 : x
  2. Step 2: Convert to fraction form
    12,465.11/18,667.94 = 7,189.02/x
  3. Step 3: Cross multiply
    12,465.11x = 18,667.94 × 7,189.02
  4. Step 4: Simplify right side
    12,465.11x = 134,204,158.07
  5. Step 5: Solve for x
    x = 134,204,158.07/12,465.11
  6. Step 6: Final answer
    x = 10,766.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.