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Finding the Fourth Proportional to 12,475.14, 18,707.54 and 5,074.57

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Solution

The fourth proportional to 12,475.14, 18,707.54 and 5,074.57 is: 7,609.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.14 : 18,707.54 = 5,074.57 : x
  2. Step 2: Convert to fraction form
    12,475.14/18,707.54 = 5,074.57/x
  3. Step 3: Cross multiply
    12,475.14x = 18,707.54 × 5,074.57
  4. Step 4: Simplify right side
    12,475.14x = 94,932,721.26
  5. Step 5: Solve for x
    x = 94,932,721.26/12,475.14
  6. Step 6: Final answer
    x = 7,609.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.