Home / 28,692.05-43,039.96-7,631.78

Finding the Fourth Proportional to 28,692.05, 43,039.96 and 7,631.78

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Solution

The fourth proportional to 28,692.05, 43,039.96 and 7,631.78 is: 11,448.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.05 : 43,039.96 = 7,631.78 : x
  2. Step 2: Convert to fraction form
    28,692.05/43,039.96 = 7,631.78/x
  3. Step 3: Cross multiply
    28,692.05x = 43,039.96 × 7,631.78
  4. Step 4: Simplify right side
    28,692.05x = 328,471,271.65
  5. Step 5: Solve for x
    x = 328,471,271.65/28,692.05
  6. Step 6: Final answer
    x = 11,448.17

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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.