Home / 11,278.43-16,921.52-5,042.74

Finding the Fourth Proportional to 11,278.43, 16,921.52 and 5,042.74

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Solution

The fourth proportional to 11,278.43, 16,921.52 and 5,042.74 is: 7,565.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.43 : 16,921.52 = 5,042.74 : x
  2. Step 2: Convert to fraction form
    11,278.43/16,921.52 = 5,042.74/x
  3. Step 3: Cross multiply
    11,278.43x = 16,921.52 × 5,042.74
  4. Step 4: Simplify right side
    11,278.43x = 85,330,825.76
  5. Step 5: Solve for x
    x = 85,330,825.76/11,278.43
  6. Step 6: Final answer
    x = 7,565.84

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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.