Home / 11,847.40-17,747.70-7,690.30

Finding the Fourth Proportional to 11,847.40, 17,747.70 and 7,690.30

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Solution

The fourth proportional to 11,847.40, 17,747.70 and 7,690.30 is: 11,520.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,847.40 : 17,747.70 = 7,690.30 : x
  2. Step 2: Convert to fraction form
    11,847.40/17,747.70 = 7,690.30/x
  3. Step 3: Cross multiply
    11,847.40x = 17,747.70 × 7,690.30
  4. Step 4: Simplify right side
    11,847.40x = 136,485,137.31
  5. Step 5: Solve for x
    x = 136,485,137.31/11,847.40
  6. Step 6: Final answer
    x = 11,520.26

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1.5x scale

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.