Home / 10,982.10-16,478.86-7,868.36

Finding the Fourth Proportional to 10,982.10, 16,478.86 and 7,868.36

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Solution

The fourth proportional to 10,982.10, 16,478.86 and 7,868.36 is: 11,806.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,982.10 : 16,478.86 = 7,868.36 : x
  2. Step 2: Convert to fraction form
    10,982.10/16,478.86 = 7,868.36/x
  3. Step 3: Cross multiply
    10,982.10x = 16,478.86 × 7,868.36
  4. Step 4: Simplify right side
    10,982.10x = 129,661,602.87
  5. Step 5: Solve for x
    x = 129,661,602.87/10,982.10
  6. Step 6: Final answer
    x = 11,806.63

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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.