Home / 13,299.95-19,952.85-3,940.70

Finding the Fourth Proportional to 13,299.95, 19,952.85 and 3,940.70

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Solution

The fourth proportional to 13,299.95, 19,952.85 and 3,940.70 is: 5,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.95 : 19,952.85 = 3,940.70 : x
  2. Step 2: Convert to fraction form
    13,299.95/19,952.85 = 3,940.70/x
  3. Step 3: Cross multiply
    13,299.95x = 19,952.85 × 3,940.70
  4. Step 4: Simplify right side
    13,299.95x = 78,628,196.00
  5. Step 5: Solve for x
    x = 78,628,196.00/13,299.95
  6. Step 6: Final answer
    x = 5,911.92

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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.