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Finding the Fourth Proportional to 11,840.58, 17,760.84 and 11,118.84

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Solution

The fourth proportional to 11,840.58, 17,760.84 and 11,118.84 is: 16,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,840.58 : 17,760.84 = 11,118.84 : x
  2. Step 2: Convert to fraction form
    11,840.58/17,760.84 = 11,118.84/x
  3. Step 3: Cross multiply
    11,840.58x = 17,760.84 × 11,118.84
  4. Step 4: Simplify right side
    11,840.58x = 197,479,938.23
  5. Step 5: Solve for x
    x = 197,479,938.23/11,840.58
  6. Step 6: Final answer
    x = 16,678.23

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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.