Home / 28,787.56-43,162.79-12,143.14

Finding the Fourth Proportional to 28,787.56, 43,162.79 and 12,143.14

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Solution

The fourth proportional to 28,787.56, 43,162.79 and 12,143.14 is: 18,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.56 : 43,162.79 = 12,143.14 : x
  2. Step 2: Convert to fraction form
    28,787.56/43,162.79 = 12,143.14/x
  3. Step 3: Cross multiply
    28,787.56x = 43,162.79 × 12,143.14
  4. Step 4: Simplify right side
    28,787.56x = 524,131,801.76
  5. Step 5: Solve for x
    x = 524,131,801.76/28,787.56
  6. Step 6: Final answer
    x = 18,206.89

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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.