Home / 20,779.22-31,168.89-8,300.27

Finding the Fourth Proportional to 20,779.22, 31,168.89 and 8,300.27

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Solution

The fourth proportional to 20,779.22, 31,168.89 and 8,300.27 is: 12,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.22 : 31,168.89 = 8,300.27 : x
  2. Step 2: Convert to fraction form
    20,779.22/31,168.89 = 8,300.27/x
  3. Step 3: Cross multiply
    20,779.22x = 31,168.89 × 8,300.27
  4. Step 4: Simplify right side
    20,779.22x = 258,710,046.76
  5. Step 5: Solve for x
    x = 258,710,046.76/20,779.22
  6. Step 6: Final answer
    x = 12,450.42

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1.5x scale

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.