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Finding the Fourth Proportional to 13,393.11, 18,483.54 and 7,425.95

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Solution

The fourth proportional to 13,393.11, 18,483.54 and 7,425.95 is: 10,248.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.11 : 18,483.54 = 7,425.95 : x
  2. Step 2: Convert to fraction form
    13,393.11/18,483.54 = 7,425.95/x
  3. Step 3: Cross multiply
    13,393.11x = 18,483.54 × 7,425.95
  4. Step 4: Simplify right side
    13,393.11x = 137,257,765.37
  5. Step 5: Solve for x
    x = 137,257,765.37/13,393.11
  6. Step 6: Final answer
    x = 10,248.38

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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.