Home / 13,586.00-20,372.78-4,223.21

Finding the Fourth Proportional to 13,586.00, 20,372.78 and 4,223.21

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Solution

The fourth proportional to 13,586.00, 20,372.78 and 4,223.21 is: 6,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.00 : 20,372.78 = 4,223.21 : x
  2. Step 2: Convert to fraction form
    13,586.00/20,372.78 = 4,223.21/x
  3. Step 3: Cross multiply
    13,586.00x = 20,372.78 × 4,223.21
  4. Step 4: Simplify right side
    13,586.00x = 86,038,436.92
  5. Step 5: Solve for x
    x = 86,038,436.92/13,586.00
  6. Step 6: Final answer
    x = 6,332.88

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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.