Home / 13,835.81-20,750.65-3,972.89

Finding the Fourth Proportional to 13,835.81, 20,750.65 and 3,972.89

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Solution

The fourth proportional to 13,835.81, 20,750.65 and 3,972.89 is: 5,958.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,835.81 : 20,750.65 = 3,972.89 : x
  2. Step 2: Convert to fraction form
    13,835.81/20,750.65 = 3,972.89/x
  3. Step 3: Cross multiply
    13,835.81x = 20,750.65 × 3,972.89
  4. Step 4: Simplify right side
    13,835.81x = 82,439,936.19
  5. Step 5: Solve for x
    x = 82,439,936.19/13,835.81
  6. Step 6: Final answer
    x = 5,958.45

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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.