Home / 11,213.52-15,464.16-8,861.28

Finding the Fourth Proportional to 11,213.52, 15,464.16 and 8,861.28

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Solution

The fourth proportional to 11,213.52, 15,464.16 and 8,861.28 is: 12,220.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.52 : 15,464.16 = 8,861.28 : x
  2. Step 2: Convert to fraction form
    11,213.52/15,464.16 = 8,861.28/x
  3. Step 3: Cross multiply
    11,213.52x = 15,464.16 × 8,861.28
  4. Step 4: Simplify right side
    11,213.52x = 137,032,251.72
  5. Step 5: Solve for x
    x = 137,032,251.72/11,213.52
  6. Step 6: Final answer
    x = 12,220.27

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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.