Home / 12,881.12-19,317.20-3,644.96

Finding the Fourth Proportional to 12,881.12, 19,317.20 and 3,644.96

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Solution

The fourth proportional to 12,881.12, 19,317.20 and 3,644.96 is: 5,466.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.12 : 19,317.20 = 3,644.96 : x
  2. Step 2: Convert to fraction form
    12,881.12/19,317.20 = 3,644.96/x
  3. Step 3: Cross multiply
    12,881.12x = 19,317.20 × 3,644.96
  4. Step 4: Simplify right side
    12,881.12x = 70,410,421.31
  5. Step 5: Solve for x
    x = 70,410,421.31/12,881.12
  6. Step 6: Final answer
    x = 5,466.17

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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.