Home / 13,787.63-20,681.51-3,399.38

Finding the Fourth Proportional to 13,787.63, 20,681.51 and 3,399.38

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Solution

The fourth proportional to 13,787.63, 20,681.51 and 3,399.38 is: 5,099.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.63 : 20,681.51 = 3,399.38 : x
  2. Step 2: Convert to fraction form
    13,787.63/20,681.51 = 3,399.38/x
  3. Step 3: Cross multiply
    13,787.63x = 20,681.51 × 3,399.38
  4. Step 4: Simplify right side
    13,787.63x = 70,304,191.06
  5. Step 5: Solve for x
    x = 70,304,191.06/13,787.63
  6. Step 6: Final answer
    x = 5,099.08

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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.