Home / 19,787.38-29,685.51-6,639.41

Finding the Fourth Proportional to 19,787.38, 29,685.51 and 6,639.41

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Solution

The fourth proportional to 19,787.38, 29,685.51 and 6,639.41 is: 9,960.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.38 : 29,685.51 = 6,639.41 : x
  2. Step 2: Convert to fraction form
    19,787.38/29,685.51 = 6,639.41/x
  3. Step 3: Cross multiply
    19,787.38x = 29,685.51 × 6,639.41
  4. Step 4: Simplify right side
    19,787.38x = 197,094,346.16
  5. Step 5: Solve for x
    x = 197,094,346.16/19,787.38
  6. Step 6: Final answer
    x = 9,960.61

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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.