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Finding the Fourth Proportional to 12,394.85, 18,568.82 and 9,607.86

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Solution

The fourth proportional to 12,394.85, 18,568.82 and 9,607.86 is: 14,393.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,394.85 : 18,568.82 = 9,607.86 : x
  2. Step 2: Convert to fraction form
    12,394.85/18,568.82 = 9,607.86/x
  3. Step 3: Cross multiply
    12,394.85x = 18,568.82 × 9,607.86
  4. Step 4: Simplify right side
    12,394.85x = 178,406,574.89
  5. Step 5: Solve for x
    x = 178,406,574.89/12,394.85
  6. Step 6: Final answer
    x = 14,393.61

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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.