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Finding the Fourth Proportional to 15,829.02, 21,843.98 and 8,659.00

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Solution

The fourth proportional to 15,829.02, 21,843.98 and 8,659.00 is: 11,949.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.02 : 21,843.98 = 8,659.00 : x
  2. Step 2: Convert to fraction form
    15,829.02/21,843.98 = 8,659.00/x
  3. Step 3: Cross multiply
    15,829.02x = 21,843.98 × 8,659.00
  4. Step 4: Simplify right side
    15,829.02x = 189,147,039.30
  5. Step 5: Solve for x
    x = 189,147,039.30/15,829.02
  6. Step 6: Final answer
    x = 11,949.38

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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.