Home / 28,679.25-43,011.36-12,875.44

Finding the Fourth Proportional to 28,679.25, 43,011.36 and 12,875.44

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Solution

The fourth proportional to 28,679.25, 43,011.36 and 12,875.44 is: 19,309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.25 : 43,011.36 = 12,875.44 : x
  2. Step 2: Convert to fraction form
    28,679.25/43,011.36 = 12,875.44/x
  3. Step 3: Cross multiply
    28,679.25x = 43,011.36 × 12,875.44
  4. Step 4: Simplify right side
    28,679.25x = 553,790,185.00
  5. Step 5: Solve for x
    x = 553,790,185.00/28,679.25
  6. Step 6: Final answer
    x = 19,309.79

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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.