Home / 28,469.48-42,719.64-11,840.96

Finding the Fourth Proportional to 28,469.48, 42,719.64 and 11,840.96

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Solution

The fourth proportional to 28,469.48, 42,719.64 and 11,840.96 is: 17,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.48 : 42,719.64 = 11,840.96 : x
  2. Step 2: Convert to fraction form
    28,469.48/42,719.64 = 11,840.96/x
  3. Step 3: Cross multiply
    28,469.48x = 42,719.64 × 11,840.96
  4. Step 4: Simplify right side
    28,469.48x = 505,841,548.45
  5. Step 5: Solve for x
    x = 505,841,548.45/28,469.48
  6. Step 6: Final answer
    x = 17,767.85

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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.