Home / 20,521.48-30,779.42-7,371.96

Finding the Fourth Proportional to 20,521.48, 30,779.42 and 7,371.96

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Solution

The fourth proportional to 20,521.48, 30,779.42 and 7,371.96 is: 11,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.48 : 30,779.42 = 7,371.96 : x
  2. Step 2: Convert to fraction form
    20,521.48/30,779.42 = 7,371.96/x
  3. Step 3: Cross multiply
    20,521.48x = 30,779.42 × 7,371.96
  4. Step 4: Simplify right side
    20,521.48x = 226,904,653.06
  5. Step 5: Solve for x
    x = 226,904,653.06/20,521.48
  6. Step 6: Final answer
    x = 11,056.93

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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.