Home / 11,908.40-17,857.80-4,113.20

Finding the Fourth Proportional to 11,908.40, 17,857.80 and 4,113.20

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Solution

The fourth proportional to 11,908.40, 17,857.80 and 4,113.20 is: 6,168.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,908.40 : 17,857.80 = 4,113.20 : x
  2. Step 2: Convert to fraction form
    11,908.40/17,857.80 = 4,113.20/x
  3. Step 3: Cross multiply
    11,908.40x = 17,857.80 × 4,113.20
  4. Step 4: Simplify right side
    11,908.40x = 73,452,702.96
  5. Step 5: Solve for x
    x = 73,452,702.96/11,908.40
  6. Step 6: Final answer
    x = 6,168.14

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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.