Home / 13,286.40-19,959.30-11,099.40

Finding the Fourth Proportional to 13,286.40, 19,959.30 and 11,099.40

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Solution

The fourth proportional to 13,286.40, 19,959.30 and 11,099.40 is: 16,673.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.40 : 19,959.30 = 11,099.40 : x
  2. Step 2: Convert to fraction form
    13,286.40/19,959.30 = 11,099.40/x
  3. Step 3: Cross multiply
    13,286.40x = 19,959.30 × 11,099.40
  4. Step 4: Simplify right side
    13,286.40x = 221,536,254.42
  5. Step 5: Solve for x
    x = 221,536,254.42/13,286.40
  6. Step 6: Final answer
    x = 16,673.91

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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.