Home / 20,251.31-30,376.04-7,103.79

Finding the Fourth Proportional to 20,251.31, 30,376.04 and 7,103.79

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Solution

The fourth proportional to 20,251.31, 30,376.04 and 7,103.79 is: 10,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.31 : 30,376.04 = 7,103.79 : x
  2. Step 2: Convert to fraction form
    20,251.31/30,376.04 = 7,103.79/x
  3. Step 3: Cross multiply
    20,251.31x = 30,376.04 × 7,103.79
  4. Step 4: Simplify right side
    20,251.31x = 215,784,973.67
  5. Step 5: Solve for x
    x = 215,784,973.67/20,251.31
  6. Step 6: Final answer
    x = 10,655.36

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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.