Home / 11,172.36-15,419.16-6,456.54

Finding the Fourth Proportional to 11,172.36, 15,419.16 and 6,456.54

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Solution

The fourth proportional to 11,172.36, 15,419.16 and 6,456.54 is: 8,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.36 : 15,419.16 = 6,456.54 : x
  2. Step 2: Convert to fraction form
    11,172.36/15,419.16 = 6,456.54/x
  3. Step 3: Cross multiply
    11,172.36x = 15,419.16 × 6,456.54
  4. Step 4: Simplify right side
    11,172.36x = 99,554,423.31
  5. Step 5: Solve for x
    x = 99,554,423.31/11,172.36
  6. Step 6: Final answer
    x = 8,910.78

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1.5x scale

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.