Home / 11,983.23-17,977.13-5,409.40

Finding the Fourth Proportional to 11,983.23, 17,977.13 and 5,409.40

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Solution

The fourth proportional to 11,983.23, 17,977.13 and 5,409.40 is: 8,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,983.23 : 17,977.13 = 5,409.40 : x
  2. Step 2: Convert to fraction form
    11,983.23/17,977.13 = 5,409.40/x
  3. Step 3: Cross multiply
    11,983.23x = 17,977.13 × 5,409.40
  4. Step 4: Simplify right side
    11,983.23x = 97,245,415.03
  5. Step 5: Solve for x
    x = 97,245,415.03/11,983.23
  6. Step 6: Final answer
    x = 8,115.13

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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.