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Finding the Fourth Proportional to 12,881.70, 19,288.73 and 10,369.55

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Solution

The fourth proportional to 12,881.70, 19,288.73 and 10,369.55 is: 15,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.70 : 19,288.73 = 10,369.55 : x
  2. Step 2: Convert to fraction form
    12,881.70/19,288.73 = 10,369.55/x
  3. Step 3: Cross multiply
    12,881.70x = 19,288.73 × 10,369.55
  4. Step 4: Simplify right side
    12,881.70x = 200,015,524.32
  5. Step 5: Solve for x
    x = 200,015,524.32/12,881.70
  6. Step 6: Final answer
    x = 15,527.11

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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.