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Finding the Fourth Proportional to 11,555.60, 17,309.10 and 9,611.60

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Solution

The fourth proportional to 11,555.60, 17,309.10 and 9,611.60 is: 14,397.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.60 : 17,309.10 = 9,611.60 : x
  2. Step 2: Convert to fraction form
    11,555.60/17,309.10 = 9,611.60/x
  3. Step 3: Cross multiply
    11,555.60x = 17,309.10 × 9,611.60
  4. Step 4: Simplify right side
    11,555.60x = 166,368,145.56
  5. Step 5: Solve for x
    x = 166,368,145.56/11,555.60
  6. Step 6: Final answer
    x = 14,397.19

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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.