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Finding the Fourth Proportional to 11,845.32, 17,771.63 and 8,521.08

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Solution

The fourth proportional to 11,845.32, 17,771.63 and 8,521.08 is: 12,784.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,845.32 : 17,771.63 = 8,521.08 : x
  2. Step 2: Convert to fraction form
    11,845.32/17,771.63 = 8,521.08/x
  3. Step 3: Cross multiply
    11,845.32x = 17,771.63 × 8,521.08
  4. Step 4: Simplify right side
    11,845.32x = 151,433,438.36
  5. Step 5: Solve for x
    x = 151,433,438.36/11,845.32
  6. Step 6: Final answer
    x = 12,784.24

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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.