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Finding the Fourth Proportional to 11,213.88, 16,828.02 and 7,520.28

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Solution

The fourth proportional to 11,213.88, 16,828.02 and 7,520.28 is: 11,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.88 : 16,828.02 = 7,520.28 : x
  2. Step 2: Convert to fraction form
    11,213.88/16,828.02 = 7,520.28/x
  3. Step 3: Cross multiply
    11,213.88x = 16,828.02 × 7,520.28
  4. Step 4: Simplify right side
    11,213.88x = 126,551,422.25
  5. Step 5: Solve for x
    x = 126,551,422.25/11,213.88
  6. Step 6: Final answer
    x = 11,285.25

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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.