Home / 11,316.45-16,972.16-3,418.64

Finding the Fourth Proportional to 11,316.45, 16,972.16 and 3,418.64

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Solution

The fourth proportional to 11,316.45, 16,972.16 and 3,418.64 is: 5,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.45 : 16,972.16 = 3,418.64 : x
  2. Step 2: Convert to fraction form
    11,316.45/16,972.16 = 3,418.64/x
  3. Step 3: Cross multiply
    11,316.45x = 16,972.16 × 3,418.64
  4. Step 4: Simplify right side
    11,316.45x = 58,021,705.06
  5. Step 5: Solve for x
    x = 58,021,705.06/11,316.45
  6. Step 6: Final answer
    x = 5,127.20

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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.