Home / 12,808.49-19,215.04-5,791.81

Finding the Fourth Proportional to 12,808.49, 19,215.04 and 5,791.81

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Solution

The fourth proportional to 12,808.49, 19,215.04 and 5,791.81 is: 8,688.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.49 : 19,215.04 = 5,791.81 : x
  2. Step 2: Convert to fraction form
    12,808.49/19,215.04 = 5,791.81/x
  3. Step 3: Cross multiply
    12,808.49x = 19,215.04 × 5,791.81
  4. Step 4: Simplify right side
    12,808.49x = 111,289,860.82
  5. Step 5: Solve for x
    x = 111,289,860.82/12,808.49
  6. Step 6: Final answer
    x = 8,688.76

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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.