Home / 13,299.12-19,951.38-4,978.94

Finding the Fourth Proportional to 13,299.12, 19,951.38 and 4,978.94

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Solution

The fourth proportional to 13,299.12, 19,951.38 and 4,978.94 is: 7,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.12 : 19,951.38 = 4,978.94 : x
  2. Step 2: Convert to fraction form
    13,299.12/19,951.38 = 4,978.94/x
  3. Step 3: Cross multiply
    13,299.12x = 19,951.38 × 4,978.94
  4. Step 4: Simplify right side
    13,299.12x = 99,336,624.18
  5. Step 5: Solve for x
    x = 99,336,624.18/13,299.12
  6. Step 6: Final answer
    x = 7,469.41

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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.