Home / 28,379.94-42,572.34-11,736.78

Finding the Fourth Proportional to 28,379.94, 42,572.34 and 11,736.78

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Solution

The fourth proportional to 28,379.94, 42,572.34 and 11,736.78 is: 17,606.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.94 : 42,572.34 = 11,736.78 : x
  2. Step 2: Convert to fraction form
    28,379.94/42,572.34 = 11,736.78/x
  3. Step 3: Cross multiply
    28,379.94x = 42,572.34 × 11,736.78
  4. Step 4: Simplify right side
    28,379.94x = 499,662,188.67
  5. Step 5: Solve for x
    x = 499,662,188.67/28,379.94
  6. Step 6: Final answer
    x = 17,606.17

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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.