Home / 28,691.05-43,039.85-7,631.95

Finding the Fourth Proportional to 28,691.05, 43,039.85 and 7,631.95

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Solution

The fourth proportional to 28,691.05, 43,039.85 and 7,631.95 is: 11,448.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.05 : 43,039.85 = 7,631.95 : x
  2. Step 2: Convert to fraction form
    28,691.05/43,039.85 = 7,631.95/x
  3. Step 3: Cross multiply
    28,691.05x = 43,039.85 × 7,631.95
  4. Step 4: Simplify right side
    28,691.05x = 328,477,810.51
  5. Step 5: Solve for x
    x = 328,477,810.51/28,691.05
  6. Step 6: Final answer
    x = 11,448.79

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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.