Home / 21,469.52-32,192.40-7,421.96

Finding the Fourth Proportional to 21,469.52, 32,192.40 and 7,421.96

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Solution

The fourth proportional to 21,469.52, 32,192.40 and 7,421.96 is: 11,128.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.52 : 32,192.40 = 7,421.96 : x
  2. Step 2: Convert to fraction form
    21,469.52/32,192.40 = 7,421.96/x
  3. Step 3: Cross multiply
    21,469.52x = 32,192.40 × 7,421.96
  4. Step 4: Simplify right side
    21,469.52x = 238,930,705.10
  5. Step 5: Solve for x
    x = 238,930,705.10/21,469.52
  6. Step 6: Final answer
    x = 11,128.83

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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.