Home / 13,340.05-20,012.94-3,980.81

Finding the Fourth Proportional to 13,340.05, 20,012.94 and 3,980.81

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Solution

The fourth proportional to 13,340.05, 20,012.94 and 3,980.81 is: 5,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.05 : 20,012.94 = 3,980.81 : x
  2. Step 2: Convert to fraction form
    13,340.05/20,012.94 = 3,980.81/x
  3. Step 3: Cross multiply
    13,340.05x = 20,012.94 × 3,980.81
  4. Step 4: Simplify right side
    13,340.05x = 79,667,596.69
  5. Step 5: Solve for x
    x = 79,667,596.69/13,340.05
  6. Step 6: Final answer
    x = 5,972.06

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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.