Home / 20,926.98-31,390.64-7,779.33

Finding the Fourth Proportional to 20,926.98, 31,390.64 and 7,779.33

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Solution

The fourth proportional to 20,926.98, 31,390.64 and 7,779.33 is: 11,669.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.98 : 31,390.64 = 7,779.33 : x
  2. Step 2: Convert to fraction form
    20,926.98/31,390.64 = 7,779.33/x
  3. Step 3: Cross multiply
    20,926.98x = 31,390.64 × 7,779.33
  4. Step 4: Simplify right side
    20,926.98x = 244,198,108.57
  5. Step 5: Solve for x
    x = 244,198,108.57/20,926.98
  6. Step 6: Final answer
    x = 11,669.06

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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.