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Finding the Fourth Proportional to 19,566.78, 29,283.42 and 12,447.42

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Solution

The fourth proportional to 19,566.78, 29,283.42 and 12,447.42 is: 18,628.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,566.78 : 29,283.42 = 12,447.42 : x
  2. Step 2: Convert to fraction form
    19,566.78/29,283.42 = 12,447.42/x
  3. Step 3: Cross multiply
    19,566.78x = 29,283.42 × 12,447.42
  4. Step 4: Simplify right side
    19,566.78x = 364,503,027.78
  5. Step 5: Solve for x
    x = 364,503,027.78/19,566.78
  6. Step 6: Final answer
    x = 18,628.67

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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.