Home / 11,426.40-17,139.60-3,107.70

Finding the Fourth Proportional to 11,426.40, 17,139.60 and 3,107.70

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Solution

The fourth proportional to 11,426.40, 17,139.60 and 3,107.70 is: 4,661.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.40 : 17,139.60 = 3,107.70 : x
  2. Step 2: Convert to fraction form
    11,426.40/17,139.60 = 3,107.70/x
  3. Step 3: Cross multiply
    11,426.40x = 17,139.60 × 3,107.70
  4. Step 4: Simplify right side
    11,426.40x = 53,264,734.92
  5. Step 5: Solve for x
    x = 53,264,734.92/11,426.40
  6. Step 6: Final answer
    x = 4,661.55

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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.