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Finding the Fourth Proportional to 18,805.71, 28,201.27 and 10,035.84

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Solution

The fourth proportional to 18,805.71, 28,201.27 and 10,035.84 is: 15,049.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.71 : 28,201.27 = 10,035.84 : x
  2. Step 2: Convert to fraction form
    18,805.71/28,201.27 = 10,035.84/x
  3. Step 3: Cross multiply
    18,805.71x = 28,201.27 × 10,035.84
  4. Step 4: Simplify right side
    18,805.71x = 283,023,433.52
  5. Step 5: Solve for x
    x = 283,023,433.52/18,805.71
  6. Step 6: Final answer
    x = 15,049.87

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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.