Home / 11,611.20-17,416.80-8,695.20

Finding the Fourth Proportional to 11,611.20, 17,416.80 and 8,695.20

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Solution

The fourth proportional to 11,611.20, 17,416.80 and 8,695.20 is: 13,042.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,611.20 : 17,416.80 = 8,695.20 : x
  2. Step 2: Convert to fraction form
    11,611.20/17,416.80 = 8,695.20/x
  3. Step 3: Cross multiply
    11,611.20x = 17,416.80 × 8,695.20
  4. Step 4: Simplify right side
    11,611.20x = 151,442,559.36
  5. Step 5: Solve for x
    x = 151,442,559.36/11,611.20
  6. Step 6: Final answer
    x = 13,042.80

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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.