Home / 12,528.52-18,787.12-3,761.72

Finding the Fourth Proportional to 12,528.52, 18,787.12 and 3,761.72

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Solution

The fourth proportional to 12,528.52, 18,787.12 and 3,761.72 is: 5,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.52 : 18,787.12 = 3,761.72 : x
  2. Step 2: Convert to fraction form
    12,528.52/18,787.12 = 3,761.72/x
  3. Step 3: Cross multiply
    12,528.52x = 18,787.12 × 3,761.72
  4. Step 4: Simplify right side
    12,528.52x = 70,671,885.05
  5. Step 5: Solve for x
    x = 70,671,885.05/12,528.52
  6. Step 6: Final answer
    x = 5,640.88

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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.