Home / 20,311.02-28,028.34-11,811.96

Finding the Fourth Proportional to 20,311.02, 28,028.34 and 11,811.96

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Solution

The fourth proportional to 20,311.02, 28,028.34 and 11,811.96 is: 16,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311.02 : 28,028.34 = 11,811.96 : x
  2. Step 2: Convert to fraction form
    20,311.02/28,028.34 = 11,811.96/x
  3. Step 3: Cross multiply
    20,311.02x = 28,028.34 × 11,811.96
  4. Step 4: Simplify right side
    20,311.02x = 331,069,630.95
  5. Step 5: Solve for x
    x = 331,069,630.95/20,311.02
  6. Step 6: Final answer
    x = 16,300.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.