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Finding the Fourth Proportional to 13,076.88, 18,040.68 and 7,483.92

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Solution

The fourth proportional to 13,076.88, 18,040.68 and 7,483.92 is: 10,324.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,076.88 : 18,040.68 = 7,483.92 : x
  2. Step 2: Convert to fraction form
    13,076.88/18,040.68 = 7,483.92/x
  3. Step 3: Cross multiply
    13,076.88x = 18,040.68 × 7,483.92
  4. Step 4: Simplify right side
    13,076.88x = 135,015,005.87
  5. Step 5: Solve for x
    x = 135,015,005.87/13,076.88
  6. Step 6: Final answer
    x = 10,324.71

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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.