Home / 13,268.70-18,310.77-7,963.50

Finding the Fourth Proportional to 13,268.70, 18,310.77 and 7,963.50

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Solution

The fourth proportional to 13,268.70, 18,310.77 and 7,963.50 is: 10,989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.70 : 18,310.77 = 7,963.50 : x
  2. Step 2: Convert to fraction form
    13,268.70/18,310.77 = 7,963.50/x
  3. Step 3: Cross multiply
    13,268.70x = 18,310.77 × 7,963.50
  4. Step 4: Simplify right side
    13,268.70x = 145,817,816.90
  5. Step 5: Solve for x
    x = 145,817,816.90/13,268.70
  6. Step 6: Final answer
    x = 10,989.61

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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.