Home / 13,783.05-20,674.53-3,787.81

Finding the Fourth Proportional to 13,783.05, 20,674.53 and 3,787.81

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Solution

The fourth proportional to 13,783.05, 20,674.53 and 3,787.81 is: 5,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.05 : 20,674.53 = 3,787.81 : x
  2. Step 2: Convert to fraction form
    13,783.05/20,674.53 = 3,787.81/x
  3. Step 3: Cross multiply
    13,783.05x = 20,674.53 × 3,787.81
  4. Step 4: Simplify right side
    13,783.05x = 78,311,191.48
  5. Step 5: Solve for x
    x = 78,311,191.48/13,783.05
  6. Step 6: Final answer
    x = 5,681.70

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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.