Home / 28,719.13-43,107.86-18,163.21

Finding the Fourth Proportional to 28,719.13, 43,107.86 and 18,163.21

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Solution

The fourth proportional to 28,719.13, 43,107.86 and 18,163.21 is: 27,263.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.13 : 43,107.86 = 18,163.21 : x
  2. Step 2: Convert to fraction form
    28,719.13/43,107.86 = 18,163.21/x
  3. Step 3: Cross multiply
    28,719.13x = 43,107.86 × 18,163.21
  4. Step 4: Simplify right side
    28,719.13x = 782,977,113.83
  5. Step 5: Solve for x
    x = 782,977,113.83/28,719.13
  6. Step 6: Final answer
    x = 27,263.26

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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.