Home / 31,364.68-47,072.94-12,909.64

Finding the Fourth Proportional to 31,364.68, 47,072.94 and 12,909.64

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Solution

The fourth proportional to 31,364.68, 47,072.94 and 12,909.64 is: 19,375.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,364.68 : 47,072.94 = 12,909.64 : x
  2. Step 2: Convert to fraction form
    31,364.68/47,072.94 = 12,909.64/x
  3. Step 3: Cross multiply
    31,364.68x = 47,072.94 × 12,909.64
  4. Step 4: Simplify right side
    31,364.68x = 607,694,709.14
  5. Step 5: Solve for x
    x = 607,694,709.14/31,364.68
  6. Step 6: Final answer
    x = 19,375.13

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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.