Home / 20,980.75-31,474.20-6,187.74

Finding the Fourth Proportional to 20,980.75, 31,474.20 and 6,187.74

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Solution

The fourth proportional to 20,980.75, 31,474.20 and 6,187.74 is: 9,282.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.75 : 31,474.20 = 6,187.74 : x
  2. Step 2: Convert to fraction form
    20,980.75/31,474.20 = 6,187.74/x
  3. Step 3: Cross multiply
    20,980.75x = 31,474.20 × 6,187.74
  4. Step 4: Simplify right side
    20,980.75x = 194,754,196.32
  5. Step 5: Solve for x
    x = 194,754,196.32/20,980.75
  6. Step 6: Final answer
    x = 9,282.52

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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.