Home / 20,779.16-31,161.36-6,735.77

Finding the Fourth Proportional to 20,779.16, 31,161.36 and 6,735.77

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Solution

The fourth proportional to 20,779.16, 31,161.36 and 6,735.77 is: 10,101.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.16 : 31,161.36 = 6,735.77 : x
  2. Step 2: Convert to fraction form
    20,779.16/31,161.36 = 6,735.77/x
  3. Step 3: Cross multiply
    20,779.16x = 31,161.36 × 6,735.77
  4. Step 4: Simplify right side
    20,779.16x = 209,895,753.85
  5. Step 5: Solve for x
    x = 209,895,753.85/20,779.16
  6. Step 6: Final answer
    x = 10,101.26

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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.