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Finding the Fourth Proportional to 13,335.54, 18,402.12 and 7,367.16

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Solution

The fourth proportional to 13,335.54, 18,402.12 and 7,367.16 is: 10,166.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.54 : 18,402.12 = 7,367.16 : x
  2. Step 2: Convert to fraction form
    13,335.54/18,402.12 = 7,367.16/x
  3. Step 3: Cross multiply
    13,335.54x = 18,402.12 × 7,367.16
  4. Step 4: Simplify right side
    13,335.54x = 135,571,362.38
  5. Step 5: Solve for x
    x = 135,571,362.38/13,335.54
  6. Step 6: Final answer
    x = 10,166.17

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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.