Home / 12,873.36-19,310.40-3,639.36

Finding the Fourth Proportional to 12,873.36, 19,310.40 and 3,639.36

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Solution

The fourth proportional to 12,873.36, 19,310.40 and 3,639.36 is: 5,459.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.36 : 19,310.40 = 3,639.36 : x
  2. Step 2: Convert to fraction form
    12,873.36/19,310.40 = 3,639.36/x
  3. Step 3: Cross multiply
    12,873.36x = 19,310.40 × 3,639.36
  4. Step 4: Simplify right side
    12,873.36x = 70,277,497.34
  5. Step 5: Solve for x
    x = 70,277,497.34/12,873.36
  6. Step 6: Final answer
    x = 5,459.14

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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.