Home / 11,031.78-16,538.36-4,787.09

Finding the Fourth Proportional to 11,031.78, 16,538.36 and 4,787.09

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Solution

The fourth proportional to 11,031.78, 16,538.36 and 4,787.09 is: 7,176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.78 : 16,538.36 = 4,787.09 : x
  2. Step 2: Convert to fraction form
    11,031.78/16,538.36 = 4,787.09/x
  3. Step 3: Cross multiply
    11,031.78x = 16,538.36 × 4,787.09
  4. Step 4: Simplify right side
    11,031.78x = 79,170,511.15
  5. Step 5: Solve for x
    x = 79,170,511.15/11,031.78
  6. Step 6: Final answer
    x = 7,176.59

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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.