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Finding the Fourth Proportional to 15,924.80, 23,906.40 and 8,910.40

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Solution

The fourth proportional to 15,924.80, 23,906.40 and 8,910.40 is: 13,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,924.80 : 23,906.40 = 8,910.40 : x
  2. Step 2: Convert to fraction form
    15,924.80/23,906.40 = 8,910.40/x
  3. Step 3: Cross multiply
    15,924.80x = 23,906.40 × 8,910.40
  4. Step 4: Simplify right side
    15,924.80x = 213,015,586.56
  5. Step 5: Solve for x
    x = 213,015,586.56/15,924.80
  6. Step 6: Final answer
    x = 13,376.34

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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.