Home / 47,721.69-71,584.36-12,661.65

Finding the Fourth Proportional to 47,721.69, 71,584.36 and 12,661.65

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Solution

The fourth proportional to 47,721.69, 71,584.36 and 12,661.65 is: 18,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,721.69 : 71,584.36 = 12,661.65 : x
  2. Step 2: Convert to fraction form
    47,721.69/71,584.36 = 12,661.65/x
  3. Step 3: Cross multiply
    47,721.69x = 71,584.36 × 12,661.65
  4. Step 4: Simplify right side
    47,721.69x = 906,376,080.14
  5. Step 5: Solve for x
    x = 906,376,080.14/47,721.69
  6. Step 6: Final answer
    x = 18,992.96

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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.