Home / 10,278.78-15,374.22-8,579.84

Finding the Fourth Proportional to 10,278.78, 15,374.22 and 8,579.84

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Solution

The fourth proportional to 10,278.78, 15,374.22 and 8,579.84 is: 12,833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.78 : 15,374.22 = 8,579.84 : x
  2. Step 2: Convert to fraction form
    10,278.78/15,374.22 = 8,579.84/x
  3. Step 3: Cross multiply
    10,278.78x = 15,374.22 × 8,579.84
  4. Step 4: Simplify right side
    10,278.78x = 131,908,270.85
  5. Step 5: Solve for x
    x = 131,908,270.85/10,278.78
  6. Step 6: Final answer
    x = 12,833.07

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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.