Home / 10,511.51-15,771.92-5,579.96

Finding the Fourth Proportional to 10,511.51, 15,771.92 and 5,579.96

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Solution

The fourth proportional to 10,511.51, 15,771.92 and 5,579.96 is: 8,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.51 : 15,771.92 = 5,579.96 : x
  2. Step 2: Convert to fraction form
    10,511.51/15,771.92 = 5,579.96/x
  3. Step 3: Cross multiply
    10,511.51x = 15,771.92 × 5,579.96
  4. Step 4: Simplify right side
    10,511.51x = 88,006,575.96
  5. Step 5: Solve for x
    x = 88,006,575.96/10,511.51
  6. Step 6: Final answer
    x = 8,372.40

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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.