Home / 20,840.94-31,187.52-18,380.55

Finding the Fourth Proportional to 20,840.94, 31,187.52 and 18,380.55

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Solution

The fourth proportional to 20,840.94, 31,187.52 and 18,380.55 is: 27,505.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.94 : 31,187.52 = 18,380.55 : x
  2. Step 2: Convert to fraction form
    20,840.94/31,187.52 = 18,380.55/x
  3. Step 3: Cross multiply
    20,840.94x = 31,187.52 × 18,380.55
  4. Step 4: Simplify right side
    20,840.94x = 573,243,770.74
  5. Step 5: Solve for x
    x = 573,243,770.74/20,840.94
  6. Step 6: Final answer
    x = 27,505.66

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1.5x scale

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.