Home / 20,530.48-30,735.74-18,560.66

Finding the Fourth Proportional to 20,530.48, 30,735.74 and 18,560.66

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Solution

The fourth proportional to 20,530.48, 30,735.74 and 18,560.66 is: 27,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.48 : 30,735.74 = 18,560.66 : x
  2. Step 2: Convert to fraction form
    20,530.48/30,735.74 = 18,560.66/x
  3. Step 3: Cross multiply
    20,530.48x = 30,735.74 × 18,560.66
  4. Step 4: Simplify right side
    20,530.48x = 570,475,619.99
  5. Step 5: Solve for x
    x = 570,475,619.99/20,530.48
  6. Step 6: Final answer
    x = 27,786.76

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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.