Home / 18,711.20-28,066.56-5,384.54

Finding the Fourth Proportional to 18,711.20, 28,066.56 and 5,384.54

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Solution

The fourth proportional to 18,711.20, 28,066.56 and 5,384.54 is: 8,076.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.20 : 28,066.56 = 5,384.54 : x
  2. Step 2: Convert to fraction form
    18,711.20/28,066.56 = 5,384.54/x
  3. Step 3: Cross multiply
    18,711.20x = 28,066.56 × 5,384.54
  4. Step 4: Simplify right side
    18,711.20x = 151,125,514.98
  5. Step 5: Solve for x
    x = 151,125,514.98/18,711.20
  6. Step 6: Final answer
    x = 8,076.74

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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.