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Finding the Fourth Proportional to 11,887.92, 16,393.86 and 9,505.44

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Solution

The fourth proportional to 11,887.92, 16,393.86 and 9,505.44 is: 13,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.92 : 16,393.86 = 9,505.44 : x
  2. Step 2: Convert to fraction form
    11,887.92/16,393.86 = 9,505.44/x
  3. Step 3: Cross multiply
    11,887.92x = 16,393.86 × 9,505.44
  4. Step 4: Simplify right side
    11,887.92x = 155,830,852.60
  5. Step 5: Solve for x
    x = 155,830,852.60/11,887.92
  6. Step 6: Final answer
    x = 13,108.34

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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.