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Finding the Fourth Proportional to 15,440.56, 21,308.04 and 8,367

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Solution

The fourth proportional to 15,440.56, 21,308.04 and 8,367 is: 11,546.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.56 : 21,308.04 = 8,367 : x
  2. Step 2: Convert to fraction form
    15,440.56/21,308.04 = 8,367/x
  3. Step 3: Cross multiply
    15,440.56x = 21,308.04 × 8,367
  4. Step 4: Simplify right side
    15,440.56x = 178,284,370.68
  5. Step 5: Solve for x
    x = 178,284,370.68/15,440.56
  6. Step 6: Final answer
    x = 11,546.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.