Home / 15,912.36-21,949.11-11,366.64

Finding the Fourth Proportional to 15,912.36, 21,949.11 and 11,366.64

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Solution

The fourth proportional to 15,912.36, 21,949.11 and 11,366.64 is: 15,678.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.36 : 21,949.11 = 11,366.64 : x
  2. Step 2: Convert to fraction form
    15,912.36/21,949.11 = 11,366.64/x
  3. Step 3: Cross multiply
    15,912.36x = 21,949.11 × 11,366.64
  4. Step 4: Simplify right side
    15,912.36x = 249,487,631.69
  5. Step 5: Solve for x
    x = 249,487,631.69/15,912.36
  6. Step 6: Final answer
    x = 15,678.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.