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Finding the Fourth Proportional to 15,796.96, 21,799.08 and 8,723.92

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Solution

The fourth proportional to 15,796.96, 21,799.08 and 8,723.92 is: 12,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.96 : 21,799.08 = 8,723.92 : x
  2. Step 2: Convert to fraction form
    15,796.96/21,799.08 = 8,723.92/x
  3. Step 3: Cross multiply
    15,796.96x = 21,799.08 × 8,723.92
  4. Step 4: Simplify right side
    15,796.96x = 190,173,429.99
  5. Step 5: Solve for x
    x = 190,173,429.99/15,796.96
  6. Step 6: Final answer
    x = 12,038.61

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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.