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Finding the Fourth Proportional to 11,009.20, 16,513.80 and 8,822.20

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Solution

The fourth proportional to 11,009.20, 16,513.80 and 8,822.20 is: 13,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.20 : 16,513.80 = 8,822.20 : x
  2. Step 2: Convert to fraction form
    11,009.20/16,513.80 = 8,822.20/x
  3. Step 3: Cross multiply
    11,009.20x = 16,513.80 × 8,822.20
  4. Step 4: Simplify right side
    11,009.20x = 145,688,046.36
  5. Step 5: Solve for x
    x = 145,688,046.36/11,009.20
  6. Step 6: Final answer
    x = 13,233.30

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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.