Home / 13,872.18-19,145.58-7,904.43

Finding the Fourth Proportional to 13,872.18, 19,145.58 and 7,904.43

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Solution

The fourth proportional to 13,872.18, 19,145.58 and 7,904.43 is: 10,909.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.18 : 19,145.58 = 7,904.43 : x
  2. Step 2: Convert to fraction form
    13,872.18/19,145.58 = 7,904.43/x
  3. Step 3: Cross multiply
    13,872.18x = 19,145.58 × 7,904.43
  4. Step 4: Simplify right side
    13,872.18x = 151,334,896.92
  5. Step 5: Solve for x
    x = 151,334,896.92/13,872.18
  6. Step 6: Final answer
    x = 10,909.24

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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.