Home / 13,815.40-20,724.06-3,954.76

Finding the Fourth Proportional to 13,815.40, 20,724.06 and 3,954.76

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Solution

The fourth proportional to 13,815.40, 20,724.06 and 3,954.76 is: 5,932.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.40 : 20,724.06 = 3,954.76 : x
  2. Step 2: Convert to fraction form
    13,815.40/20,724.06 = 3,954.76/x
  3. Step 3: Cross multiply
    13,815.40x = 20,724.06 × 3,954.76
  4. Step 4: Simplify right side
    13,815.40x = 81,958,683.53
  5. Step 5: Solve for x
    x = 81,958,683.53/13,815.40
  6. Step 6: Final answer
    x = 5,932.41

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1.5x scale

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.