Home / 20,158.55-30,233.87-19,158.38

Finding the Fourth Proportional to 20,158.55, 30,233.87 and 19,158.38

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Solution

The fourth proportional to 20,158.55, 30,233.87 and 19,158.38 is: 28,733.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.55 : 30,233.87 = 19,158.38 : x
  2. Step 2: Convert to fraction form
    20,158.55/30,233.87 = 19,158.38/x
  3. Step 3: Cross multiply
    20,158.55x = 30,233.87 × 19,158.38
  4. Step 4: Simplify right side
    20,158.55x = 579,231,970.33
  5. Step 5: Solve for x
    x = 579,231,970.33/20,158.55
  6. Step 6: Final answer
    x = 28,733.81

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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.