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Finding the Fourth Proportional to 12,480.83, 18,729.29 and 8,038.03

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Solution

The fourth proportional to 12,480.83, 18,729.29 and 8,038.03 is: 12,062.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.83 : 18,729.29 = 8,038.03 : x
  2. Step 2: Convert to fraction form
    12,480.83/18,729.29 = 8,038.03/x
  3. Step 3: Cross multiply
    12,480.83x = 18,729.29 × 8,038.03
  4. Step 4: Simplify right side
    12,480.83x = 150,546,538.03
  5. Step 5: Solve for x
    x = 150,546,538.03/12,480.83
  6. Step 6: Final answer
    x = 12,062.23

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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.