Home / 10,513.90-15,765.99-3,116.44

Finding the Fourth Proportional to 10,513.90, 15,765.99 and 3,116.44

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Solution

The fourth proportional to 10,513.90, 15,765.99 and 3,116.44 is: 4,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.90 : 15,765.99 = 3,116.44 : x
  2. Step 2: Convert to fraction form
    10,513.90/15,765.99 = 3,116.44/x
  3. Step 3: Cross multiply
    10,513.90x = 15,765.99 × 3,116.44
  4. Step 4: Simplify right side
    10,513.90x = 49,133,761.88
  5. Step 5: Solve for x
    x = 49,133,761.88/10,513.90
  6. Step 6: Final answer
    x = 4,673.22

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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.