Home / 20,779.95-31,175.25-5,990.02

Finding the Fourth Proportional to 20,779.95, 31,175.25 and 5,990.02

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Solution

The fourth proportional to 20,779.95, 31,175.25 and 5,990.02 is: 8,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.95 : 31,175.25 = 5,990.02 : x
  2. Step 2: Convert to fraction form
    20,779.95/31,175.25 = 5,990.02/x
  3. Step 3: Cross multiply
    20,779.95x = 31,175.25 × 5,990.02
  4. Step 4: Simplify right side
    20,779.95x = 186,740,371.01
  5. Step 5: Solve for x
    x = 186,740,371.01/20,779.95
  6. Step 6: Final answer
    x = 8,986.56

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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.