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Finding the Fourth Proportional to 12,901.86, 19,354.60 and 4,134.72

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Solution

The fourth proportional to 12,901.86, 19,354.60 and 4,134.72 is: 6,202.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.86 : 19,354.60 = 4,134.72 : x
  2. Step 2: Convert to fraction form
    12,901.86/19,354.60 = 4,134.72/x
  3. Step 3: Cross multiply
    12,901.86x = 19,354.60 × 4,134.72
  4. Step 4: Simplify right side
    12,901.86x = 80,025,851.71
  5. Step 5: Solve for x
    x = 80,025,851.71/12,901.86
  6. Step 6: Final answer
    x = 6,202.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.