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Finding the Fourth Proportional to 12,361.56, 18,520.74 and 10,294.86

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Solution

The fourth proportional to 12,361.56, 18,520.74 and 10,294.86 is: 15,424.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,361.56 : 18,520.74 = 10,294.86 : x
  2. Step 2: Convert to fraction form
    12,361.56/18,520.74 = 10,294.86/x
  3. Step 3: Cross multiply
    12,361.56x = 18,520.74 × 10,294.86
  4. Step 4: Simplify right side
    12,361.56x = 190,668,425.40
  5. Step 5: Solve for x
    x = 190,668,425.40/12,361.56
  6. Step 6: Final answer
    x = 15,424.30

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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.