Home / 12,429.15-18,643.69-3,664.14

Finding the Fourth Proportional to 12,429.15, 18,643.69 and 3,664.14

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Solution

The fourth proportional to 12,429.15, 18,643.69 and 3,664.14 is: 5,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.15 : 18,643.69 = 3,664.14 : x
  2. Step 2: Convert to fraction form
    12,429.15/18,643.69 = 3,664.14/x
  3. Step 3: Cross multiply
    12,429.15x = 18,643.69 × 3,664.14
  4. Step 4: Simplify right side
    12,429.15x = 68,313,090.28
  5. Step 5: Solve for x
    x = 68,313,090.28/12,429.15
  6. Step 6: Final answer
    x = 5,496.20

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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.