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Finding the Fourth Proportional to 11,511.90, 17,118.23 and 11,160.90

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Solution

The fourth proportional to 11,511.90, 17,118.23 and 11,160.90 is: 16,596.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.90 : 17,118.23 = 11,160.90 : x
  2. Step 2: Convert to fraction form
    11,511.90/17,118.23 = 11,160.90/x
  3. Step 3: Cross multiply
    11,511.90x = 17,118.23 × 11,160.90
  4. Step 4: Simplify right side
    11,511.90x = 191,054,797.40
  5. Step 5: Solve for x
    x = 191,054,797.40/11,511.90
  6. Step 6: Final answer
    x = 16,596.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.