Home / 20,134.80-30,207.40-7,655.04

Finding the Fourth Proportional to 20,134.80, 30,207.40 and 7,655.04

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Solution

The fourth proportional to 20,134.80, 30,207.40 and 7,655.04 is: 11,484.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.80 : 30,207.40 = 7,655.04 : x
  2. Step 2: Convert to fraction form
    20,134.80/30,207.40 = 7,655.04/x
  3. Step 3: Cross multiply
    20,134.80x = 30,207.40 × 7,655.04
  4. Step 4: Simplify right side
    20,134.80x = 231,238,855.30
  5. Step 5: Solve for x
    x = 231,238,855.30/20,134.80
  6. Step 6: Final answer
    x = 11,484.54

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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.