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Finding the Fourth Proportional to 28,992.69, 39,710.12 and 27,290.48

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Solution

The fourth proportional to 28,992.69, 39,710.12 and 27,290.48 is: 37,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.69 : 39,710.12 = 27,290.48 : x
  2. Step 2: Convert to fraction form
    28,992.69/39,710.12 = 27,290.48/x
  3. Step 3: Cross multiply
    28,992.69x = 39,710.12 × 27,290.48
  4. Step 4: Simplify right side
    28,992.69x = 1,083,707,900.65
  5. Step 5: Solve for x
    x = 1,083,707,900.65/28,992.69
  6. Step 6: Final answer
    x = 37,378.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.