Home / 13,787.01-20,678.56-4,425.81

Finding the Fourth Proportional to 13,787.01, 20,678.56 and 4,425.81

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Solution

The fourth proportional to 13,787.01, 20,678.56 and 4,425.81 is: 6,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.01 : 20,678.56 = 4,425.81 : x
  2. Step 2: Convert to fraction form
    13,787.01/20,678.56 = 4,425.81/x
  3. Step 3: Cross multiply
    13,787.01x = 20,678.56 × 4,425.81
  4. Step 4: Simplify right side
    13,787.01x = 91,519,463.50
  5. Step 5: Solve for x
    x = 91,519,463.50/13,787.01
  6. Step 6: Final answer
    x = 6,638.09

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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.