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Finding the Third Proportional to 8,643 and 11,320.50

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Solution

The third proportional to 8,643 and 11,320.50 is: 14,827.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643 : 11,320.50 = 11,320.50 : x
  2. Step 2: Convert to fraction form
    8,643/11,320.50 = 11,320.50/x
  3. Step 3: Cross multiply
    8,643x = 11,320.50 × 11,320.50
  4. Step 4: Simplify right side
    8,643x = 128,153,720.25
  5. Step 5: Solve for x
    x = 128,153,720.25/8,643
  6. Step 6: Final answer
    x = 14,827.46

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.