Home / 13,855.08-19,119.24-7,886.64

Finding the Fourth Proportional to 13,855.08, 19,119.24 and 7,886.64

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Solution

The fourth proportional to 13,855.08, 19,119.24 and 7,886.64 is: 10,883.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.08 : 19,119.24 = 7,886.64 : x
  2. Step 2: Convert to fraction form
    13,855.08/19,119.24 = 7,886.64/x
  3. Step 3: Cross multiply
    13,855.08x = 19,119.24 × 7,886.64
  4. Step 4: Simplify right side
    13,855.08x = 150,786,562.95
  5. Step 5: Solve for x
    x = 150,786,562.95/13,855.08
  6. Step 6: Final answer
    x = 10,883.12

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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.