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Finding the Fourth Proportional to 14,538.50, 20,063.78 and 8,570.42

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Solution

The fourth proportional to 14,538.50, 20,063.78 and 8,570.42 is: 11,827.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,538.50 : 20,063.78 = 8,570.42 : x
  2. Step 2: Convert to fraction form
    14,538.50/20,063.78 = 8,570.42/x
  3. Step 3: Cross multiply
    14,538.50x = 20,063.78 × 8,570.42
  4. Step 4: Simplify right side
    14,538.50x = 171,955,021.39
  5. Step 5: Solve for x
    x = 171,955,021.39/14,538.50
  6. Step 6: Final answer
    x = 11,827.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.