Home / 13,375.08-18,455.79-7,406.60

Finding the Fourth Proportional to 13,375.08, 18,455.79 and 7,406.60

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Solution

The fourth proportional to 13,375.08, 18,455.79 and 7,406.60 is: 10,220.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.08 : 18,455.79 = 7,406.60 : x
  2. Step 2: Convert to fraction form
    13,375.08/18,455.79 = 7,406.60/x
  3. Step 3: Cross multiply
    13,375.08x = 18,455.79 × 7,406.60
  4. Step 4: Simplify right side
    13,375.08x = 136,694,561.94
  5. Step 5: Solve for x
    x = 136,694,561.94/13,375.08
  6. Step 6: Final answer
    x = 10,220.09

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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.