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Finding the Third Proportional to 8,655.61 and 13,558.64

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Solution

The third proportional to 8,655.61 and 13,558.64 is: 21,239.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.61 : 13,558.64 = 13,558.64 : x
  2. Step 2: Convert to fraction form
    8,655.61/13,558.64 = 13,558.64/x
  3. Step 3: Cross multiply
    8,655.61x = 13,558.64 × 13,558.64
  4. Step 4: Simplify right side
    8,655.61x = 183,836,735.60
  5. Step 5: Solve for x
    x = 183,836,735.60/8,655.61
  6. Step 6: Final answer
    x = 21,239.03

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.