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Finding the Fourth Proportional to 12,750.86, 19,101.36 and 8,354.98

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Solution

The fourth proportional to 12,750.86, 19,101.36 and 8,354.98 is: 12,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.86 : 19,101.36 = 8,354.98 : x
  2. Step 2: Convert to fraction form
    12,750.86/19,101.36 = 8,354.98/x
  3. Step 3: Cross multiply
    12,750.86x = 19,101.36 × 8,354.98
  4. Step 4: Simplify right side
    12,750.86x = 159,591,480.77
  5. Step 5: Solve for x
    x = 159,591,480.77/12,750.86
  6. Step 6: Final answer
    x = 12,516.13

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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.