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Finding the Fourth Proportional to 13,134, 18,120.36 and 7,468.08

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Solution

The fourth proportional to 13,134, 18,120.36 and 7,468.08 is: 10,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134 : 18,120.36 = 7,468.08 : x
  2. Step 2: Convert to fraction form
    13,134/18,120.36 = 7,468.08/x
  3. Step 3: Cross multiply
    13,134x = 18,120.36 × 7,468.08
  4. Step 4: Simplify right side
    13,134x = 135,324,298.11
  5. Step 5: Solve for x
    x = 135,324,298.11/13,134
  6. Step 6: Final answer
    x = 10,303.36

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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.