Home / 13,972.50-20,964.83-5,206.28

Finding the Fourth Proportional to 13,972.50, 20,964.83 and 5,206.28

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Solution

The fourth proportional to 13,972.50, 20,964.83 and 5,206.28 is: 7,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.50 : 20,964.83 = 5,206.28 : x
  2. Step 2: Convert to fraction form
    13,972.50/20,964.83 = 5,206.28/x
  3. Step 3: Cross multiply
    13,972.50x = 20,964.83 × 5,206.28
  4. Step 4: Simplify right side
    13,972.50x = 109,148,644.28
  5. Step 5: Solve for x
    x = 109,148,644.28/13,972.50
  6. Step 6: Final answer
    x = 7,811.68

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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.