Home / 13,890.43-19,168.30-7,924

Finding the Fourth Proportional to 13,890.43, 19,168.30 and 7,924

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Solution

The fourth proportional to 13,890.43, 19,168.30 and 7,924 is: 10,934.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.43 : 19,168.30 = 7,924 : x
  2. Step 2: Convert to fraction form
    13,890.43/19,168.30 = 7,924/x
  3. Step 3: Cross multiply
    13,890.43x = 19,168.30 × 7,924
  4. Step 4: Simplify right side
    13,890.43x = 151,889,609.20
  5. Step 5: Solve for x
    x = 151,889,609.20/13,890.43
  6. Step 6: Final answer
    x = 10,934.84

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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.