Home / 28,691.58-39,578.40-26,661.96

Finding the Fourth Proportional to 28,691.58, 39,578.40 and 26,661.96

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Solution

The fourth proportional to 28,691.58, 39,578.40 and 26,661.96 is: 36,778.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.58 : 39,578.40 = 26,661.96 : x
  2. Step 2: Convert to fraction form
    28,691.58/39,578.40 = 26,661.96/x
  3. Step 3: Cross multiply
    28,691.58x = 39,578.40 × 26,661.96
  4. Step 4: Simplify right side
    28,691.58x = 1,055,237,717.66
  5. Step 5: Solve for x
    x = 1,055,237,717.66/28,691.58
  6. Step 6: Final answer
    x = 36,778.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.