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Finding the Fourth Proportional to 11,227.10, 16,840.64 and 4,985.64

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Solution

The fourth proportional to 11,227.10, 16,840.64 and 4,985.64 is: 7,478.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,227.10 : 16,840.64 = 4,985.64 : x
  2. Step 2: Convert to fraction form
    11,227.10/16,840.64 = 4,985.64/x
  3. Step 3: Cross multiply
    11,227.10x = 16,840.64 × 4,985.64
  4. Step 4: Simplify right side
    11,227.10x = 83,961,380.87
  5. Step 5: Solve for x
    x = 83,961,380.87/11,227.10
  6. Step 6: Final answer
    x = 7,478.46

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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.