Home / 13,107.92-19,665.72-5,314.64

Finding the Fourth Proportional to 13,107.92, 19,665.72 and 5,314.64

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Solution

The fourth proportional to 13,107.92, 19,665.72 and 5,314.64 is: 7,973.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.92 : 19,665.72 = 5,314.64 : x
  2. Step 2: Convert to fraction form
    13,107.92/19,665.72 = 5,314.64/x
  3. Step 3: Cross multiply
    13,107.92x = 19,665.72 × 5,314.64
  4. Step 4: Simplify right side
    13,107.92x = 104,516,222.14
  5. Step 5: Solve for x
    x = 104,516,222.14/13,107.92
  6. Step 6: Final answer
    x = 7,973.52

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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.