Home / 13,866.40-20,787.90-6,466.96

Finding the Fourth Proportional to 13,866.40, 20,787.90 and 6,466.96

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Solution

The fourth proportional to 13,866.40, 20,787.90 and 6,466.96 is: 9,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.40 : 20,787.90 = 6,466.96 : x
  2. Step 2: Convert to fraction form
    13,866.40/20,787.90 = 6,466.96/x
  3. Step 3: Cross multiply
    13,866.40x = 20,787.90 × 6,466.96
  4. Step 4: Simplify right side
    13,866.40x = 134,434,517.78
  5. Step 5: Solve for x
    x = 134,434,517.78/13,866.40
  6. Step 6: Final answer
    x = 9,694.98

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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.