Home / 13,299.79-19,952.60-3,940.55

Finding the Fourth Proportional to 13,299.79, 19,952.60 and 3,940.55

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Solution

The fourth proportional to 13,299.79, 19,952.60 and 3,940.55 is: 5,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.79 : 19,952.60 = 3,940.55 : x
  2. Step 2: Convert to fraction form
    13,299.79/19,952.60 = 3,940.55/x
  3. Step 3: Cross multiply
    13,299.79x = 19,952.60 × 3,940.55
  4. Step 4: Simplify right side
    13,299.79x = 78,624,128.02
  5. Step 5: Solve for x
    x = 78,624,128.02/13,299.79
  6. Step 6: Final answer
    x = 5,911.68

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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.