Home / 13,993.78-19,310.61-8,403.70

Finding the Fourth Proportional to 13,993.78, 19,310.61 and 8,403.70

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Solution

The fourth proportional to 13,993.78, 19,310.61 and 8,403.70 is: 11,596.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.78 : 19,310.61 = 8,403.70 : x
  2. Step 2: Convert to fraction form
    13,993.78/19,310.61 = 8,403.70/x
  3. Step 3: Cross multiply
    13,993.78x = 19,310.61 × 8,403.70
  4. Step 4: Simplify right side
    13,993.78x = 162,280,573.26
  5. Step 5: Solve for x
    x = 162,280,573.26/13,993.78
  6. Step 6: Final answer
    x = 11,596.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.