Home / 20,811.87-31,216.59-6,020.46

Finding the Fourth Proportional to 20,811.87, 31,216.59 and 6,020.46

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Solution

The fourth proportional to 20,811.87, 31,216.59 and 6,020.46 is: 9,030.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.87 : 31,216.59 = 6,020.46 : x
  2. Step 2: Convert to fraction form
    20,811.87/31,216.59 = 6,020.46/x
  3. Step 3: Cross multiply
    20,811.87x = 31,216.59 × 6,020.46
  4. Step 4: Simplify right side
    20,811.87x = 187,938,231.43
  5. Step 5: Solve for x
    x = 187,938,231.43/20,811.87
  6. Step 6: Final answer
    x = 9,030.34

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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.