Home / 28,400.82-42,572.37-11,769.90

Finding the Fourth Proportional to 28,400.82, 42,572.37 and 11,769.90

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Solution

The fourth proportional to 28,400.82, 42,572.37 and 11,769.90 is: 17,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.82 : 42,572.37 = 11,769.90 : x
  2. Step 2: Convert to fraction form
    28,400.82/42,572.37 = 11,769.90/x
  3. Step 3: Cross multiply
    28,400.82x = 42,572.37 × 11,769.90
  4. Step 4: Simplify right side
    28,400.82x = 501,072,537.66
  5. Step 5: Solve for x
    x = 501,072,537.66/28,400.82
  6. Step 6: Final answer
    x = 17,642.89

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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.