Home / 28,617.12-42,933.30-11,971.56

Finding the Fourth Proportional to 28,617.12, 42,933.30 and 11,971.56

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Solution

The fourth proportional to 28,617.12, 42,933.30 and 11,971.56 is: 17,960.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.12 : 42,933.30 = 11,971.56 : x
  2. Step 2: Convert to fraction form
    28,617.12/42,933.30 = 11,971.56/x
  3. Step 3: Cross multiply
    28,617.12x = 42,933.30 × 11,971.56
  4. Step 4: Simplify right side
    28,617.12x = 513,978,576.95
  5. Step 5: Solve for x
    x = 513,978,576.95/28,617.12
  6. Step 6: Final answer
    x = 17,960.53

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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.