Home / 15,766.78-21,757.16-8,693.26

Finding the Fourth Proportional to 15,766.78, 21,757.16 and 8,693.26

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Solution

The fourth proportional to 15,766.78, 21,757.16 and 8,693.26 is: 11,996.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.78 : 21,757.16 = 8,693.26 : x
  2. Step 2: Convert to fraction form
    15,766.78/21,757.16 = 8,693.26/x
  3. Step 3: Cross multiply
    15,766.78x = 21,757.16 × 8,693.26
  4. Step 4: Simplify right side
    15,766.78x = 189,140,518.22
  5. Step 5: Solve for x
    x = 189,140,518.22/15,766.78
  6. Step 6: Final answer
    x = 11,996.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.