Home / 20,779.77-31,162.92-6,736.80

Finding the Fourth Proportional to 20,779.77, 31,162.92 and 6,736.80

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Solution

The fourth proportional to 20,779.77, 31,162.92 and 6,736.80 is: 10,103.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.77 : 31,162.92 = 6,736.80 : x
  2. Step 2: Convert to fraction form
    20,779.77/31,162.92 = 6,736.80/x
  3. Step 3: Cross multiply
    20,779.77x = 31,162.92 × 6,736.80
  4. Step 4: Simplify right side
    20,779.77x = 209,938,359.46
  5. Step 5: Solve for x
    x = 209,938,359.46/20,779.77
  6. Step 6: Final answer
    x = 10,103.02

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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.