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Finding the Fourth Proportional to 11,915.68, 17,783.48 and 11,604.64

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Solution

The fourth proportional to 11,915.68, 17,783.48 and 11,604.64 is: 17,319.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.68 : 17,783.48 = 11,604.64 : x
  2. Step 2: Convert to fraction form
    11,915.68/17,783.48 = 11,604.64/x
  3. Step 3: Cross multiply
    11,915.68x = 17,783.48 × 11,604.64
  4. Step 4: Simplify right side
    11,915.68x = 206,370,883.35
  5. Step 5: Solve for x
    x = 206,370,883.35/11,915.68
  6. Step 6: Final answer
    x = 17,319.27

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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.