Home / 20,779.44-31,169.16-5,197.07

Finding the Fourth Proportional to 20,779.44, 31,169.16 and 5,197.07

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Solution

The fourth proportional to 20,779.44, 31,169.16 and 5,197.07 is: 7,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.44 : 31,169.16 = 5,197.07 : x
  2. Step 2: Convert to fraction form
    20,779.44/31,169.16 = 5,197.07/x
  3. Step 3: Cross multiply
    20,779.44x = 31,169.16 × 5,197.07
  4. Step 4: Simplify right side
    20,779.44x = 161,988,150.52
  5. Step 5: Solve for x
    x = 161,988,150.52/20,779.44
  6. Step 6: Final answer
    x = 7,795.60

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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.