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Finding the Fourth Proportional to 11,690.88, 17,556.48 and 8,580.48

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Solution

The fourth proportional to 11,690.88, 17,556.48 and 8,580.48 is: 12,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.88 : 17,556.48 = 8,580.48 : x
  2. Step 2: Convert to fraction form
    11,690.88/17,556.48 = 8,580.48/x
  3. Step 3: Cross multiply
    11,690.88x = 17,556.48 × 8,580.48
  4. Step 4: Simplify right side
    11,690.88x = 150,643,025.51
  5. Step 5: Solve for x
    x = 150,643,025.51/11,690.88
  6. Step 6: Final answer
    x = 12,885.52

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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.