Home / 20,820.85-31,236.27-6,030.79

Finding the Fourth Proportional to 20,820.85, 31,236.27 and 6,030.79

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Solution

The fourth proportional to 20,820.85, 31,236.27 and 6,030.79 is: 9,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.85 : 31,236.27 = 6,030.79 : x
  2. Step 2: Convert to fraction form
    20,820.85/31,236.27 = 6,030.79/x
  3. Step 3: Cross multiply
    20,820.85x = 31,236.27 × 6,030.79
  4. Step 4: Simplify right side
    20,820.85x = 188,379,384.75
  5. Step 5: Solve for x
    x = 188,379,384.75/20,820.85
  6. Step 6: Final answer
    x = 9,047.63

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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.