Home / 28,617.88-42,926-7,841.38

Finding the Fourth Proportional to 28,617.88, 42,926 and 7,841.38

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Solution

The fourth proportional to 28,617.88, 42,926 and 7,841.38 is: 11,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.88 : 42,926 = 7,841.38 : x
  2. Step 2: Convert to fraction form
    28,617.88/42,926 = 7,841.38/x
  3. Step 3: Cross multiply
    28,617.88x = 42,926 × 7,841.38
  4. Step 4: Simplify right side
    28,617.88x = 336,599,077.88
  5. Step 5: Solve for x
    x = 336,599,077.88/28,617.88
  6. Step 6: Final answer
    x = 11,761.85

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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.