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Finding the Fourth Proportional to 12,672.48, 19,011.84 and 4,881.84

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Solution

The fourth proportional to 12,672.48, 19,011.84 and 4,881.84 is: 7,323.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.48 : 19,011.84 = 4,881.84 : x
  2. Step 2: Convert to fraction form
    12,672.48/19,011.84 = 4,881.84/x
  3. Step 3: Cross multiply
    12,672.48x = 19,011.84 × 4,881.84
  4. Step 4: Simplify right side
    12,672.48x = 92,812,760.99
  5. Step 5: Solve for x
    x = 92,812,760.99/12,672.48
  6. Step 6: Final answer
    x = 7,323.96

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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.