Home / 13,588.80-18,753.44-7,620.85

Finding the Fourth Proportional to 13,588.80, 18,753.44 and 7,620.85

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Solution

The fourth proportional to 13,588.80, 18,753.44 and 7,620.85 is: 10,517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.80 : 18,753.44 = 7,620.85 : x
  2. Step 2: Convert to fraction form
    13,588.80/18,753.44 = 7,620.85/x
  3. Step 3: Cross multiply
    13,588.80x = 18,753.44 × 7,620.85
  4. Step 4: Simplify right side
    13,588.80x = 142,917,153.22
  5. Step 5: Solve for x
    x = 142,917,153.22/13,588.80
  6. Step 6: Final answer
    x = 10,517.28

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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.