Home / 13,311.81-19,960.21-4,422.38

Finding the Fourth Proportional to 13,311.81, 19,960.21 and 4,422.38

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Solution

The fourth proportional to 13,311.81, 19,960.21 and 4,422.38 is: 6,631.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.81 : 19,960.21 = 4,422.38 : x
  2. Step 2: Convert to fraction form
    13,311.81/19,960.21 = 4,422.38/x
  3. Step 3: Cross multiply
    13,311.81x = 19,960.21 × 4,422.38
  4. Step 4: Simplify right side
    13,311.81x = 88,271,544.75
  5. Step 5: Solve for x
    x = 88,271,544.75/13,311.81
  6. Step 6: Final answer
    x = 6,631.07

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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.