Home / 20,739.37-31,103.55-7,591.84

Finding the Fourth Proportional to 20,739.37, 31,103.55 and 7,591.84

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Solution

The fourth proportional to 20,739.37, 31,103.55 and 7,591.84 is: 11,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.37 : 31,103.55 = 7,591.84 : x
  2. Step 2: Convert to fraction form
    20,739.37/31,103.55 = 7,591.84/x
  3. Step 3: Cross multiply
    20,739.37x = 31,103.55 × 7,591.84
  4. Step 4: Simplify right side
    20,739.37x = 236,133,175.03
  5. Step 5: Solve for x
    x = 236,133,175.03/20,739.37
  6. Step 6: Final answer
    x = 11,385.74

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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.