Home / 20,160.55-30,236.87-19,160.38

Finding the Fourth Proportional to 20,160.55, 30,236.87 and 19,160.38

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Solution

The fourth proportional to 20,160.55, 30,236.87 and 19,160.38 is: 28,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.55 : 30,236.87 = 19,160.38 : x
  2. Step 2: Convert to fraction form
    20,160.55/30,236.87 = 19,160.38/x
  3. Step 3: Cross multiply
    20,160.55x = 30,236.87 × 19,160.38
  4. Step 4: Simplify right side
    20,160.55x = 579,349,919.21
  5. Step 5: Solve for x
    x = 579,349,919.21/20,160.55
  6. Step 6: Final answer
    x = 28,736.81

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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.